You should initiate a takeover only if you intend to take over the region, not for its side effects. Yes, it's not easily enforcible and people will do it anyway, but that's the idea behind "make game actions as your in game character interprets it", rather than purely for the game mechanics reasons.
Similarly, you wouldn't appoint a lord and say "oh no, it's just so the region stabilizes while we pick a good lord". Again, this is only to illustrate a point.
Then how would you suggest an occupation is enacted? The only game way I know of would be to begin a brutal take over then not complete.
Since similar things happen in both an occupation and a take over the difference being occupations are temporary.
