Wow to both of you! Brilliant progress indeed, TMD's map looks very nice and durian's updates look slick too. Glad to see more screenies :)
Here's some reviews from others involved in the project about the beta that was sent out.
map01 is very good!, i like the music and textures combination, but i think the bfg is a bit easy to take 9.2/10
map02 is fine, the music i felt it good, has open areas and that is good for many players but i felt it have low details 8.2/10
map03 o.0, looks funny but if it get a lot of player the fun maybe will be only for the one is live, pretty good for 4-8 players 8.8/10
map04 no words. in a good way ofc
map05 i smell the "os times"... the map remember me an os mappack, i think it was a dwango idk, but the bfg spam is present 9.3/10
map06 is too complex!, and that is good the music is pretty good bro and i think is a good one 9.5/10
map07 nice that's all, seems the guy tooks it time... and it's good as well the music 9.5/10
map08 is too big and small at the same time... yes i mean has a lot of rooms but they are so small :(, but maybe with 6-10 players will be pretty fun 8/10
map09 hell live in us!, nah joke, but i like hell themed maps and it is pretty good for sure it is for 4-8 players 9.8/10
map10 nice one bro'! the map is good and the music is a epic remix of the d_runnin, but i don't know how to get the bfg :( but that's good imo =P 9.1/10
map11 the name is..., well i don't know but the map is good for 4-10 players, it is a good os map ;) 8.5/10
map12 ah another remake... and it is good, i think is a combination between map01 and e1m1? but is good themed 9/10
map13 i'm stuck, i respawn in a room i had to use noclip for this, anyway the gameplay is meh, but have good detail :P need have more connected rooms! 7.6/10
map14 wow, is too big! the music is good but i think is for 8-16 players 8.6/10
map15 bad if you are claustrophobic, is small but i'ts not bad... maybe add more sector or "gameplay" 7.9/10
i think i cant do a review of my own map
map17 is good but for lms, don't offend but i did't see weapons and is too for dm maybe a 16-32 but i think would be better for a tmls or lms 7.8/10 because if bad for dm but the map isn't so bad
map18 is not bad, but i feel it so poor :(, need details and a bit of gameplay 8/10
map19 i don't want stay in hell D:!, jokes but the map is good bro! need a bit of detail but the gameplay i think is good 4-8 but is good ofc 8.9/10
map20 NO WAY!, another remake? haha ofc is it in a good way very good but i think need more, i don't know but i think there is something that need 8.6/10
(I think I'm going to remove Entrymake 3 because I don't really like it anymore)
MAP01 (DMR01): Overall very nice. I'd make it just a tad bigger (ie adding a few rooms). Oh and remove the player spawn at bfg. It's just a bad idea.
MAP02 (Entrymake): Pretty cool and playable layout. Like one_Two said, it's most likely going to be popular. The only fix i really see is the BFG lift (make the delay shorter, I could get there with SR50 with time to spare).
MAP03 (Rocket Jump): Not a bad concept. Maybe put at least one other weapon in there (like maybe a chaingun), as well as just a bit more texture variation.
MAP04 (Block Fort): Reminds me a bit of a Mario game I once played, not bad, but the BFG is WAAYY too easy to grab (I can get it without the switch via jumping).
MAP05 (Big Donut): Even easier to get the BFG than the previous map, but I like this map. Very spacious and playable. Slight bit more detail would be nice.
MAP06 (Opposing Forces): Again, not a bad map (would be nice for TDM), however I don't see any real way of getting the BFG (except for rocket jumping).
MAP07 (Generic UAC Base): HO MAH GAWD NICE (it's my map, so im not gonna give an opinion on it.
MAP08 (Trips and Tracks): Nice Doom II map remake. Fairly playable. Again, another easy BFG to grab. Also, id either make the center doors faster or just remove them altogether. It sorta interrupts the flow of the map.
MAP09 (Hellfighter): Fairly good. Feels like there's a hallway missing on the right side of the map, but I like it. I see no way of getting the BFG or exiting the map.
MAP10 (Weapon Research Facility): Very nice and big. Good flow, very playable, and a neat way of getting the BFG and plasma gun.
MAP11 (one_Two's Map):Basic but very playable. I'd add just a bit more detail, and weapon spots.
MAP12 (Entrymake 2): Not as good as the first one, but i sorta like the MAP01/E1M1 crossover. I'd trim down the size of the map, as it seems a bit too big. Nice way to get the BFG.
MAP13 (The Crematorium): All of my wat. Seriously, I, nor anybody really, could even play this as a duel map. WAAYY too small, linear, and tight. Please tell me this isn't the final map product.
MAP14 (Spaceport): I've got mixed feelings. The Detailing and some of the layout is nice, but it felt to close for comfort. Ceilings and room width in some spots felt way too short, and the BFG I could get by jumping as well. Overall, not bad, but needs some improvemnt.
MAP15 (The Algae Wall): Uhh....was this meant for DM? It looks like this was sorta made for Co-op, judging by the small amount of rooms there are, as well as the fact that I could run to both sides in 5 seconds with no issues. Needs to be a lot bigger.
MAP16 (Judgement): A map with a decent concept and nice layout. Fairly playable, and the BFG is a decent challenge to get. I'd make the floor where the BFG is moving so that you can't camp there with it all day. Oh and I'd make the lava have a bit more height than the water and blood (just some common sense and logic).
MAP17 (Comfield): To be honest, this is pretty bad. One area is way too fucking compact and close for comfort. The map is waayy to big for probably an FNF (and that's saying a lot), the texturing seems to be somewhat slapped there just because.... Overall, kinda unplayable. Needs tons of improvement.
MAP18 (Splatter House): Cool concept, but the level feels kinda bland with all the wood texturing. Id make the map a bit bigger with more rooms, and use some more detailing. Overall, pretty playable, just needs a bit of improvement.
MAP19 (You're In Hell): I like this a fair bit. Pretty playable, but it needs the line horizon in the lava pit area on the far side. Also in the lava pit, I'd make some islands you can jump to (just for more usage of space).
MAP20 (Entrymake 3): Possibly the worst Entrymake in here. You can't get the blue armor, the map feels okay at best, and the BFG is once again a somewhat easy grab. (doom_kid92 I know you made these probably, so I suggest maybe removing this one. Two remakes is enough.)
It's good to get detailed feedback like this, it really will make the mapset come together better in the end. Also remember that many of these maps are still far from completion, so there's plenty of "wiggle room" with the maps, so to speak.