to be honest, i don't realy like what Obisdian/Bethesda did with the Weapon Mod Kits idea, the Mod for FO3 was far superrior ( http://fallout3nexus.com/downloads/file.php?id=3388 ).
lets start with the pipboy menu,
if you have a broken weapon, the Repair button only glows if you have an appropriate Item in your inventory!
but the Mod button ALLWAYS glows, there is no check.
Once attached the Mods cant be removed, (yes i'd like to have the scope and the silencer optional, not just as an upgade).
This get's even worse on some Modding Weapons like the PP2000 from Alex Scorpion ( http://www.newvegasnexus.com/downloads/file.php?id=35770 ) ,
i like to use the Iron Sights OFF mode, simply because it has better animations (no guns warping to the center of the screen in a nanosecond).
But the PP2000 has this holosight thingy which is a Mod for the Weapon and with Iron Sights OFF it kinda blocks the view instead of beeing helpful and you can't remove it once attached.
A silencer realy should be something you can attach for sneaking and de-attach if you want to make more damage etc.
So HELL YEAH i would use a Mod that improves this.
But even if those Problems are adressed i still think WMK was supperrior because you could mix and match mods, you had to go to a workbench and it got it's own UI.
I don't know if this is true but i did read from a modder that the game only supports THREE Weapon Mods per gun.
That is a limitation that many mods will want to break.
Just look at this pic: http://www.newvegasnexus.com/downloads/images/34983-2-1287775251.jpg
certainly more then 3 Mods.
Then there are diffrent Camo Skins on other weapons ( http://www.newvegasnexus.com/downloads/images/34752-1-1287577147.jpg ) ... that could also be integrated into a new WMK mod.
Instead if having 50 versions of the same gun in a box in the Doctors House in Goodsprings there could be one and the mod's are scattered arround the wasteland.
For diffrent Camo Skins it could be required to have a spraygun....
There is so much possibility to this and yet the game mechanics are so limited that i realy have to ask if Obsidian/Bethesda even thought about what they were doing or if they just wanted to be able to use this mechanic for promoting the game?
Hell in every preview i read the Weapon Mods were announced like a big thing, but it realy is just a simple Upgrade System, and not even on par with the WMK mod for FO3, i did expect better from professionals ( lol ).
So YES please make it better if you can