The solution to vaulting characters...

bbigler

D3 simply adds the boosted characters for the week to the 3* and 4* token pools. This way "vaulted" characters can still be obtained in packs but at a much higher rate than before, which fixes both problems.....dilution and vaulting. For example, Classic Legendary tokens could contain the latest twelve 4*s plus 3 older 4*s which get rotated every week. So, a player simply needs to save up their CP until the older character(s) they need are in the rotation and then buy a bunch of tokens, with increased odds of getting the older covers they still need. This would still allow players to quickly build up new characters too, but at a slightly slower rate.

BUT the real problem that D3 needs to fix is the rate at which they release new characters. Slow down that rate!