What is your take on the payout window? what do you suggest? I am only thinking that making a shorter payout window may lead to more inflation of the token and that's bad for the price.

There is no suggestion here to shorten it. 7 days is already too short. Other platforms allow to you earn for life (as long as the platform is working), so this is were the problem is.

And yes, the resteem idea is a really great one.