ya like something like
"Beast Synchronization"
a merit that adds into you're traits that "enhances all equipped traits" which would really be bumps all equipped traits +1 (2 would be fantastic, but I'm not holding my breath for that) tier of the trait. So Dualwield 1 + Merit Trait = Dual Wield 2 (maximum merits of course)

I think that is a great idea