My opinion:
1-Stability
2-Integrade faf in to steam somehow (most likely not possible, but that is the biggest on)
3-more easy modding
4-more Single / Coop Campaign with different difficulties (most rts players dont want want to play vs player / dont have the time to learn the game)
5-Noob game matchmaking
6-Automatch making with no visible ranking (like tft/lol normal mode. it is equal to ranked, but you will not find any score)
7-Pay some streamers how are into strategie in general to try the game. If 0-4 it good the will then create there one content from now on.
8-more visible custom game modes ->phantom/survival matchmaking or tab with