in-match mute option (so anyone can stop getting messages from an opponent that is being a duche and/or enjoys harassing others because there are some people like that and they ruin the gameplay experience (example: koof_)
blacklist (so anyone can add a player to their blacklist, to ask matchmaking system not to be put into the same team with the person in team games or not to play against that person)
Gretchins: burrow ability and move through terrain obstacles (so orcs can get resource points a little bit faster and can win early game against Eldar who have bonesinger teleport rush) (also so gretchins can do what bonesingers do: meele taunt after warp, useful against ranged units)
Deffcoptas: either give them the features I mentioned below as Bikk's, or give Deffcoptas a scrap upgrade adding a machinegunner (anti-infrantry) aside, so they can fly paralelly to running infrantry and shoot them.
Bikk: (motorcycle vehicle unit from Trukk building) (150 req 50 power) (moves as fast or faster than deffcopta in straight line) (manouvers like shadow spectres) (Main damage: anti-vehicle/infrastructure rockets) (scrap ugrade: 2nd weapon, machinegun, this one anti-infrantry) (both weapons shoot in triangle range up-front, available vehicle upgrade to add another shooter on the back)
Unit for driving it behind the frontline to take down enemy's generators with the rockets or finding and killing Eldar webwaygates. Scrap upgrade allows chasing infrantry squads (DA/Banshee/DR or TacSM) and taking out the leftovers running away.
Spectres add reverse move function and increase their sight range (because they're flying ghosts, can see and can move freely - but get focused and they move closer to enemy to get back, that kills them and they are squishy already).
Some units that are better than ASM spam in 10th minute (yea sure tacs, yea sure balance patch, but why not more possibilities?)