As for the title says, I'd tell my humble suggestions:
ReplacementsM4 carabine---->replaces rifle
Beretta 92Fs---> replaces pistol
Light machien gun---->replaces autocannon
M79 grenade launcher--->Heavy cannon
RPG and or bazooka---->replaces rochet launcher
Tazer pistol------->replaces stun rod
- A couple of armor to replace personal armor and and power armor. i'd leave the flying one as it is now
(never stood the auto cannon and the heavy cannon >.< I really rarely used in almost 15 years of xcom playng)
Various items- A new sprite replacemente for the mind probe (hell, the original one it's a....balll!!!!
)
- A new sprite replacemente for the medikit (a more actula one)
Addictions- Even them may find room, such a combat knife (rambo style
) and a sniper rifle
- Some armors