It scales good in 1v1 and 2v2 and completely sucks in 4v4, because there is less room for manuevers and much more AT everywhere.
I like how t34-76 and su-85 work after patch because both tanks became CONSISTENT and have a DEFINED ROLE.
I build 2xt34-76 for killing lone squads and capping flanks, and su85 to support infantry force in center, and then add KV-2 or IS-2 from either Industry or Armored assault commander for more "meat"
Wait few months before playing the game while Paradox fixes all major bugs and adds more content and random situations, because currently game feels empty at mid-game stage.
It needs more events happening on colonies, more diplomatic options, better AI, better optimisation(the game lags in multiplayer), more scripted events, more anomalies, more stuff happening around, MORE WIN CONDITIONS(not only destroying all other races and capturing half of galaxy), more combat depth(combat formations, better battle report, ability to use some tactics).
Crusader Kings 2 did not have a lot of content at release either, but look at it now. I hope Paradox will not fail with Stellaris one cuz they did not fail before