Thanks for adding that point I forgot to add. By moving up the deadline, it becomes a lot more costly for a team to add salary just for a playoff run since that team will have to bear the weight of those extra salaries for an extra couple of weeks. For, say, a D.II team to suddenly add more than $100k of salary (I've seen that happen), that would translate into an additional $200k of expenses. If that gets factored in to the investment, another side affect is that the pre-playoff TL market won't get quite as hot as it does not when 5th place teams can clean up by dumping salary right then. (Believe me, I know this is a motivation for finishing in 5th since I was intentionally trying to take advantage of this myself as a 5th place team!)
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!