Following the GZDoom port of Doom 64, BD-64 revitalizes the old Doom 64 with new special effects, particles, lightning, gore, new sounds, more weapon animations (shotgun reloads, smoother minigun barrels, etc.) and monsters and stuff cut from the original Nintendo 64 version. Works on GZDoom and Zandronum in OpenGL mode. (Zdoom and Zandronum Software mode are not supported.) No downloads available yet. Mod still is very early WIP.
I'd love to see more zombie marine types added, the assault rifle should be added the ones the other marines use, even more UAC facility levels, alt weapon functions, aiming down the sight, more demon types, cyborg demons, phantoms, hell maybe even some of the Doom 1/2 enemies just with Doom 64 graphics, weapon upgrades, upgraded backpack with even more ammo, and the list could go on
Pretty sure this mod is going for a more vanilla feel, so don't hold your breath for even half the stuff you mentioned.
Well there is always hope for Project Brutality 64
Oh yeah, that would be pretty cool.