Right, anyway. Basically, they're Doom weapons. But better. How they're better... well, they're generally more responsive (where it makes sense - no instant BFG for you), more powerful, rip the shit out of pk_weapons.pk3, and... well... it works in all major IWADs. Even Strife. Well, not perfectly in Strife, but it's a pile of hacks thrown on a pile of even more hacks, so no big deal.
Note that the Doomguy acts like the Doomguy, even in other IWADs. Holding health for later? NOPE. Carrying around a tome of power? LOL NO, ACTIVATES INSTANTLY. Shadow armor? Pretty much useless, unless you have a good use for it in the nearby vicinity. At least mystic urns and surgery kits can get you to 200 health.
Anyway, link. Screenshots coming in a little bit.
ZDoom - http://filesmelt.com/dl/betterdoomweapons4_1.zip
Zandronum - http://filesmelt.com/dl/betterdoomweapons4_1-zandro.zip
Edit: SCREENSHOTS
Or...
[spoiler]






edit: I should probably make it clear that this isn't meant to be a super-serious mod, so don't take it super-serious. I'm not, so you shouldn't. Still, if something's broken...