After thinking about it on and off for a couple of days, I don't think Disney will do a KOTOR movie - it's just not going to happen. Disney has been very reluctant to promote pre-buyout Star Wars canon. The most they're prepared to do is a few cameos or easter eggs here and there (Cassian/Jyn Orso inspired by Kyle Katarn/Jan Ors , Thrawn and Ruhk in Star Wars Rebels etc). Make sense from Disneys' perspective. Why promote parts of a franchise they're not going to make one cent off?
As much as I would like to see a KOTOR movie (or anything done by Bioware made into TV for that matter), it's just not going to happen.