I'm prepared, I have 277 medals and 21,215 certificates. Need 34,500 to clear the phase 2 shop of all the gear except the furniture.

I think I have like 12k certificates for phase 2, so a start. Medals, I wasn't hoarding. If its like phase 2 before summoning bosses will be less important because there may be plenty to kill without summoning your own. I did pull a lvl 90 phase 1 boss just before maintenance, I was happy that with just 1 RP I was able to have my good raid group kill it (2.3M), and only just starting on the third squad. So I should be able to take on any close to escaping phase 2 bosses.

whelp, as expected from phase 2 RB, they're on steroid. On the other hand they are nothing much since they only attack 1 time per turn.