Hey VaiN, welcome to the forums
Regarding Armor, I have not considered the possibility of changing armor that way. It would certantly be doable. If you really want to elminate Power Armor and energy weapons from the wasteland then a stand alone mod could do that pretty easily. You'd just have to decide what armor you wanted the previously power armored factions to wear. I, for example, would put the Enclave in Antistars DTO armor if I were to make this for myself.
Weapons on the other hand are where my focus always was with Fewer Gun Weilding Maniacs. I'm giving all factions access to all weapon types, so whatever kinds of weapons you think a faction should use is what they will use. I'm taking very specific steps to use only weapon lists already found in the game, this means that any weapons added to the game from other mods will show up on whatever NPCs you assign that weapon class to.
I'm familiar with ZealotLees' work, especialy his ACR
! I actually had the same thought when he asked if there were any weapon requests not from a Modern Warfare game. I've been looking at the work of a few different modelers to see about adding some new Savage weapons to the game.