Well, my problem is mostly that I have to do the DOOM thing and TURN instead of just push a direction and go in that (and before anyone asks, I play DOOM with the more modern, Quake-like control scheme of WASD+mouse). What's more, strafing is pretty slow, and, IIRC, won't work well when running. Plus the turn and strafe buttons reverse when you're jumping; whose bright idea was THAT?
Frankly, I don't think any of that would've been alleviated on any other version. Beyond that, though, it was pretty playable, just really hard; again, mostly because of the control scheme making jumping around kinda tricky. To this day, I don't think I've beaten it... even WITH the cheating to get to the secret final boss.