It would be nice to be able to make kin based off of members in a village with you. It's annoying having to run around catching people when they are online and being close enough to kin. I'd appreciate being able to make kin from any range as long as they are online and in the same village. The village screen would be ideal for this.
I don't forsee any major issues with this although I'm not sure how well it would work if the person you are trying to kin is a supergrid away. Nevertheless It would be nice for this process to be less tedious.