Looks great but the functionality is not there.. This will require patches.. I've sent my list to the devs let me know if you have any others:
1) No chat channels/lobby
2) Multiplayer maps aren't working/not available
--workaround by pasting maps in every folder seems to work
3) Settings are not saved when launching maps
4) No countdown to launch - 5 4 3 2 1 (even bnet had this)
5) Can't set observers in game or lobbies
6) No ally/vision panel in game
7) Mouse slowness/weirdness
Right clicks in fog don't display X
9) No map preview in multiplayer
10) Users without maps don't download maps automatically
11) UI menu sliders don't work well, takes multiple clicks to move
12) Game speeds are not shown by their names - Fastest, Even Faster, Faster etc
13)No ability to put passwords on multiplayer lobbbies (this has been a thing for 25 years)
14) Host can't set teams
15) Host can't set observers
16) No Lag popup in multiplayer - game just freezes and players drop