My problems with BE trade is so overpowered that the only viable viable gambit on the tech route is depots,boats then miasma fences that gives you the quest option to make convoys invincible to aliens.anything else and you are soon lagging behind.
The wierd decision to get rid of allowing players to name their units, flavour fluff like that added to the story telling narrative and ultimately replayability.
The staggered start, nice idea but gives the early AI a buff over the later arrivals, and the landing sequence replaying 10 time soon looses its appeal.both aspects can be turned off thankfully
blandness of terrain tiles especially difficulty distinguishing hills from lowlands persist as do the permaswarms that spawn from nests but randomly shuffle around without really causing any sense of danger. In civ 5 barb swarms could trash your infrastructure here they just wander aimlessly ouside your boarders once fences are up,only posing a danger to explorers
minor bases spawning close to valuable resources, not sure if this is due to the AI routine using the same decision making process as the regular ai in colony placement but several times a optimal settlement site has been cockblocked by some clowns offering to trade 2 gold and 2 beakers...GET OFF MOI MOON!!!