Righto, firstly: non-instant travelling projectiles, sure bullets could more like 10 spaces in 1 turn, (I'm assuming Doomguy takes like 10 turns to do anything, am I right?) but in the real doom, most projectiles aren't instantious, I've noticed this because Cacodemons are way, way deadler in DoomRL than the real Doom, I was thinking they should still be fast, perhaps 1 space in 1 turn, so it's only possible to dodge them when fighting at long ranges.
Secondly: Movement should be faster (for everything), or firing slower, I mean Caco's firing 1 big bolt things everytime you move a space isn't really doomish, I mean, Caco's can't fire 3 bolts at ya in the real doom when you're moving between a doorway, heck they'd be lucky to get 3 in on a decent sized room when you're crossing from one size to the other. Same thing goes for Imps and Barons etc, and demons would become more of a threat like they are in real doom, as opposed to an occasional nasty surprise on the other side of a door.
Questions? Comments? Complaints? (sp) corrections? Confessions as to your vile hatred to my pure soul :-P.