Really wish they would start an affinity type program for these players. I really like a lot of the cards, but I also feel the need to use other cards over these, so I can keep plugging away at team affinity.
Have it work the same way, for every HR, IP, etc have these accumulative stats work towards rewards and maybe even vouchers down the road to unlock other players.
Just an opinion I thought I might share, in case someone high up sees it and maybe make it a reality.