if so then i have an idea

sentry:
level 1:starts with a single machine gun
level 2:gains 3 machine guns
level 3:third machine gun replaced with "heavy gun" which fires larger more damaging bullets"
immovable
more ammo consumption

dispenser:
allows sight of the entire map
engineer can airdrop a supply crate to teammates
no longer heals teammates.
enemies can pick up supply crate
30 second cooldown

sub entry, supply crates:
gives one of the following effects:
max health increased for 15 seconds
crits for 10 seconds
heals all damage and gives maximum ammo

teleporter:
replaced with air drop
allows players to pick a location in a certain radius to teleport
less health and cant be moved