Which mod did you guys install to fix the ash/goo pile bug*? I got around the issue in FO3 by hardly using energy weapons until very late in the game.
Theres 2 mods which sound like the authors gave more thought to the problem instead of just removing the piles and inadvertently stopping respawns from happening or removing essential (dead) quest characters and their quest items.
http://www.nexusmods.com/newvegas/mods/40208/?
http://www.nexusmods.com/newvegas/mods/56337/?
* ash/goo piles will not be removed and keep increasing in number in areas where enemies respawn/get killed. The (dead) ash piles are still tied to the live respawned enemies and can be pickpocketed while the live NPCs will not have any equipment on them (or something like that). Also too many piles will bloat savegame sizes, complicate looting and cause crashes.
Other essential mods which I found-
Fallout fullscreen mod by Buda to allow alt-tabbing, works for FO3/NV
Optional-
No Neos - stop enemies dodging bullets (didn't see it often enough in FO3 to be a problem)
Bullet time - use AP for bullet time instead of using VATS
Auto aim fix - fix autoaim (didn't realize the problem was there in FO3/NV in the first place)