Three drastic changes in a row? Are you kidding?
And what are the two drastic changes that happened? The salaries are only slightly increased for LI guards which were the biggest problem, but the salaries are also sightly increased for players for other tactics as well.
Example
(http://i.imgur.com/PNgKNyK.png): This player wasn't trained last season at all, and yet his salary increased from 113,620 to 122,014.
The salary increase of 5-6% is pretty irrelevant for LI guards who always had low salary.
BB's didn't do any drastic changes for 20+ seasons that I'm playing it. Otherwise inside tactics wouldn't still be the most dominant tactics.