I'd like to see things like;
From megamod:
-Letter from the past random encounter
-Temple of Trials conspiracy (they believe you cheated)
-Bunker 21, Vault 14/23, Shack, Scraptown, Farm outside Den, Scene of an accident, Ruined City, BOS Bunker, BOS research facility
-Black Scorpion (loved the suprise in the ToT)
-Cameron's riddles at end of ToT (just tweak the wording a bit)
-Working Gila Monster/Cockroach
-Navarro quests
-BUT NONE OF THAT NEW VISION, lootable armor, etc
-Just the add-ons that enhance, and are working/bug free/not corny/and don't make the game easier than it already is
Not from megamod:
-Use of the Deathclaws critters from Tactics
-More variety in critter strengths/colors
-Finesse weapon graphics mod
-Completion of the sub
-All Fallout 1 special encounters
-Revival of easter egg (chicken) npc
-General fix of all bugs
-1 ridiculous town only available once you beat the game, that has all the bosses from F1, F2, tactics, and the Overseer (this is not serious)