As far as the improvements to the job process, I like parts 1 & 2, provided that the adjustment to loyalty doesn't make it possible to jump between jobs, perhaps lessen the impact on loyalty for the first job change, but really hit hard a 2nd move in a short period of time.
I have always thought the 4 year window was too brief - and it was simply made worse by the fact that the success seemed to be valued as 75% the most recent season, 15% the next most recent, and 5% for years 3-4. I could see adding a bonus for significant historical success, and/or extending the window to 6-8 years and less significant weighting of the most recent season. My only concern is that by widening the window it may make it tougher for people to move up from low DI to a mid-major, or a lower end A-10/BCS school, if those schools would want to see DI success for the entire new longer window.
I'm not totally sold on tweaking school minimums, I'm not sure there is really a need for that.