Basically, stuff from fallout that would be awesome tho have, that isn't the pipboy.
WARNING: IMAGE HEAVY.1.Cryo grenade.

The Cryo grenade deals only one point of damage to targets, but will freeze them solid for 3 seconds.
2. Super Sledge

70 damage, but slow. If you can, do realistic weapon swinging movements instead of the default sword swinging movement.
3.Fallout Mutated Anmals
The animals because for raiders and the other things, all you need is a bot.
http://fallout.wikia.com/wiki/Yao_Guai
http://fallout.wikia.com/wiki/Molerat
http://fallout.wikia.com/wiki/Mirelurk (lol, ZAPT soldier anyone?)
http://fallout.wikia.com/wiki/Bloatfly
http://fallout.wikia.com/wiki/Giant_ant
The Bug mod already contains A scorpion.
4. Perks
Yes, I know Gravity Cat has a Perk system, but there is only 4 and they are related to most modern war games (like Black ops). I'm just suggesting a few perks here.
Animal Friend - Makes it so that AI fallout animals won't attack you (if they are made).
Commando - Rifles (like the ones in T+T) do more damage and have slightly increased accuracy.
Gunslinger - Same as above, except with pistols (including T+T pistol pack, default guns, SFrevolver, Alien Blaster(s), etc).
Life Giver - Increases health by [insert amount here] points (you decide).
Bloody mess -When you kill enemies, they explode in a gory mess. also increases damage a little.
5. Nuka-Cola
Well why the forget not? We have Burgers, and Sodas, but no Nuka-Cola.
End.