and resource changes that only affects 3v3+.
The biggest problem I have seen apart from maps is just huge snowballing effect. That aspect alone makes 3v3+ actually harder for me than 2v2 recently. I have come back from plenty of bad early game in 2v2s but almost never in 3v3s. it is one thing to counter 2 opponents who are ahead of you, it is exponentially harder when you get 2 more teammates who are also lagging behind and 2 more enemies who are also ahead.
I have been following the recent 2v2 tourney mostly via tightrope's cast and it is astonishing how many come backs there are from early game stumbles. I find those come backs much harder by design in 3v3+ due to smaller maps and generally more resources,,, but also just the fact that tech pace in 3v3+ are much quicker.
+1000