ah I see what you mean, or at least I think I do - seems you intend on using a 6 team playoff bracket? So the top 2 "2-0" teams from the RR go to top 4, whereas the loser still plays a 2-1 team. I like that, I do think in both scenarios there are plenty of cases where that last game is essentially useless in RR, but at least with yours even if that one is just a seeding game in this case - you still have games after.
So if my math is correct - the 3 GSL groups would lead to 5 games each, RR 3 games, and playoffs 7 - maybe 8 if the whole thing is double elim. So total 25 or 26 games. Just as a point of reference, the full 12 team double elim bracket is 22 games. The format I suggested - albeit with that likely useless game in RR - would be 24 games.
I'd love to know more about the logistics of running one of these kickoff tournaments and how much room they have in the scheduling for potential extra games. Still with all the flaws with group C in last years kickoff - the format was still far better than just a straight up bracket.