I'm not sure why you directed that at Savato when it was me who had the misapprehension. o_o

It's a fairly good idea for terms of balance IMO, but to be honest I've never had /that/ much of a fear of Jinchuuriki because historically the people who use Jinchuuriki have been unable to use them to their maximum capacity. They seem to be desirable mostly for the status of saying "I'm the Jinchuuriki of ..." rather than the actual power they hold.