Trade rewind for eternity, improved heals for sanctuaries. -2 QTs. -1 rage elixer -2 thunderbolts +2 pandemoniums.
Reasoning for each suggestion: Eternity over rewind helps to eternity loop voodoo dolls or fire flies. Also dont need to be so afraid of hourglassing hard then with braveries.
Improved heals over sanctuaries for more element diversity, allowing sutff to be played easier. This also helps when you lower your QTs. If your vsing a rush, your gonna want instantaneous heal, also if the opponent steals a sanctuary your braveries are useless until a sofo destroys it +1 turn. -2 qts because of more element diversity, and I dont think you will notice the difference all that much except late game where you get more useful stuff. -1 rage elixer because with more consistancy of a smaller deck your going to be drawing harder and thus, even with mark, I wouldnt want you to be quanta strained at all, giving room for quanta denails except black holes, this problem can be solved with sanct but again, the problem with a card that's just as popular, even more popular in platinum metagame according to the AMMP thread. Pandemonium is cheap, but gives you your only mass CC. This stops rushes in their tracks quite well, and vs stall decks with a big creature you can get freeze, antimatter, TU and a lot of useful stuff with pandemonium, as well with element diversity so you can afford -2 QTs. Hell, I bet you could do -3 or -4, but small stuff first. See how you like it and gradually ween down the number of QTs til you find it just right.