I'm not sure where I got the idea from exactly, but I decided I'd have a go at recreating the original Doom E1M1 in the style of Doom 2 MAP01. In that I think I've succeeded, although there is a little bit more detail in this than the original levels of either Doom 1 or 2, and I couldn't resist using a couple of new flats in places.
After I'd finished the layout, I realise I might as well have ago at improving the gameplay a bit. After all, I know it's the easiest setting, but a grand total of FOUR enemies on I'm Too Young To Die? Now there's 19 on this setting, 32 on medium and 47 on hard.
DM has also been given a fair bit of consideration, and you should find it plays considerably differently than Doom E1M1. Perhaps the most important difference is that the central outdoor area now serves as a crossroads rather than a dead end.
BTW, listen closely and even the E1M1 music has been slightly changed to more closely match the music from MAP01. Ditto for the sky.
Credits:
ID Software for E1M1 and MAP01.
The author of neutered.wad for the 'fixed' SUPPORT2 and DOORSTOP textures.
Base:
All new level from scratch (though heavily inspired by E1M1 & MAP01)