Hardcore mode is lametacular. S&D is even worse than hardcore. Therefore, TWL is utter crap.
CoD4 is
very spray friendly, especially in hardcore mode. Hardcore mode has
nothing to do with aim, in fact. Just spray near someone and you usually get a kill. If you want to do decently, stop using snipers and instead go for the M4 or AK-47 for normal-sized maps and AK-74u or MP5 for tighter ones and watch your kill ratio jump up noticeably.
I played on a Euro server (Dignitas) about an hour ago that was running some mod they call "promode." It was crazy fast. The walk/sprint speed was dramatically higher than vanilla and you could run further without stopping. Going back to a normal server made it feel like slow motion... so I went 50-15 my first (and only) game. And, yes, it's based on normal mode so there is some aim required.
This mod also disables all air support, including UAVs, removes perks, removes grenades (in public mode), removes weapon attachments, removes ambient noise, stops the automatic Halo knife, removes random smoke and fire in maps, clears up the fog a bit, and has some weapon balance changes.
I think the weapons have Bandolier and Stopping Power built in, though. Every ass rifle I played with had 180 bullets to spawn, though you couldn't pick up ammo from fallen guns anymore. And the snipers definitely seemed to be one-shotters.
Unfortunately, the mod doesn't stop bellyflopping, so you can still exploit going prone while shooting without any aim penalty.
PS: NRG, either you cheat or you've found some servers full of terrible players to troll. If it's the latter case, post the IPs so we can join the chaos.