Who are your main teams? I have two accounts now and I compiled all my cards from both accounts into one pile. Then I split the piles by colour.

So @itisfinished has all of my LIFE and DEATH cards.
And @infidel1258 has all my FIRE and WATER cards.

This way they both have a couple teams to run, and their best cards are more competitive than they would be if I was trying to run two full accounts, with all splinters on each account.