I think he's reasonably capable, certaintly he's not near the bottom of the list. It's pretty subjective anyway, but yeah.
I don't see how he's the least active either. I'll give everyone a chance to post before I decide anyway for real.
Then we'll be here for a while.
Seriously, I don't see how you consider capable when he has done nothing in any of the games and is always inactive (No personal offence to Kantos, but lets be serious).
Someone has to stick their neck out on the line, and it looks like it's going to be me. If he has a power role, then you can place the blame in my direction.