So I tried my best on sunday, starting from having done only 2 matches so far.
I went to AAA with no loss. Every ~second team had at least 1 talisman set that does not fit the color slots of the respective char (@ devs: You really cannot reproduce this in house? Can't believe!).
In AAA (gunner only) I identified the hardest team (Gambler, KP, Sekhmet, Ass Banshee), tried with the 2 best counters I have, lost both, stopped playing.
I really don't care to get to top 100 (well actually you need to be top 10 to get 2 Tali sets) or something, AAA is my main goal. But not being able to pass AAA is pretty surprising and frustrating.
Gauntlet is not fun anymore with these conditions!