Ok, so we all know there are marks that give a lot more quantum per turn A.K.A. the false gods marks. I think it would be a great addition to the game if you could upgrade your marks as well.
Here's how I think it should work.
after you have beaten all the quest there will be a button in the quest menu that says upgrade mark. The first time you upgrade it it will cost 10,000 gold and your mark will generate 2 quantum per turn. the second time you upgrade it, it will cost you 50,000 and it will generate 3 quantum per turn.
It will be a regular mark in a PVP 1 duel just like upgraded cards are still regular.
do you guys like the Idea?
P.S. If this has already been suggested please don't flame me