I did a playthrough of Cell's and Hurricyclone's maps, get the demos here!
Note that I played the most recent version of Map17, so the demo should work.
Cell: Really nice looking level, very intimidating looking. I'm not sure why you think your map plays "bad", because I thought it was fine. I think a few of the traps might be too easy to escape from; in the library trap, I literally managed to fall down the stair case despite the commotion being made from the chaingunners and Hell Knights and I didn't even get hit. I'm not saying make the map Plutonia hard, btw, as I felt the difficulty was just fine otherwise. I found a very small percentage of the secrets in your map, so the map is very completable without them.
Consider lowering the damage in the lava pit that leads to the Blue Armor; I fell in it because I couldn't see the gaps in the ledges, and suddenly I had lost 40% of my health.
My only other quibble would be to check the width of some of the doorways; there was one door towards the end of the map that I could barely fit through, and it hurt the flow of the map (nothing game breaking, obviously.)
Once again, really great looking level, great use of faux bridges and fancy effects, really fun to play.
Pretty sure I played the most recent version of this as well, CyoBC.wad I think.
Hurricyclone: This is another really fun level; it looks very nice, though each court yard looks the same for the most part, and I'm not to sure if the plain grass texture for a floor works that well. Since it's a series of courtyard, maybe place some walk ways or (very low) hedges or something to make it look more... courtyardy :p Right now, it really looks more like an inner castle.
Gameplay wise, the map is fairly challenging as I died three times and ultimately couldn't finish it. The farthest I got was the Cyberdemons, which I'm not too sure how anyone can survive that blind (three of them!?) There either needs to be some cover in that fight or more wiggle room.
For the pinky demon trap, you might want to move the pinky demons back slightly, as picking up that rocket launcher and immediately firing seems like certain death for anyone who charges into that court yard at top speed.
Overall, two really nice maps, sorry it took a while to get some play testing done.
Glad you liked it! But I have to ask, which one? :P
I've played through, and wow, I just can't resist saying what a sweet marvelous map it is!