Maybe only allow jumpshots if you have 2 more Power Draw than you need to draw the bow. e.g horn bow requires 7 PD to jumpshot and rus bow requires 8.
This would buff strength archers and maybe reduce the number of kiting ones. It would also give people a reason to take the lower level bows at a high level, since all you see past level 20ish is horn, and rus (maybe the rare yumi, tatar or long). This would mean that with the 15/21 archer build you could take a horn bow with no jumpshot, or a nomad bow with jumpshot - variety?
Maybe.