I don't know if this will change for next season, but it's been pretty damn hard to progress at all in the GC with accounts flexing double digit numbers of 7* R4's. My current win rate is pretty much 50% in GC where some matchups are fair with my account of 4 R4's and a dozen R3's, but then right after I'll face multiple accounts of 12 R4's and then the remaining R3's (and lots of them being big spending accounts with Dark Phoenix and Human Torch at R4).
With a 50% win rate I've grinded GC steady for 7 days (lots of energy and tokens) and for my efforts I sit at 0 points

I don't know if this is just a sign to stop trying in Gladiator Circuit at all, or just give up this season until all the Battlerealm Brawl hoopla is over