it does annoy me... like when allies take neutral extractors that i worked hard for... fucking little snipers...
anyway, its a bitch, but all i do if i REALLY want a planet is save, quit, reload with unlocked teams, wage war, wipe out the planet, do some missions, get their trust, or not, and just re-load with locked teams again...
or ill scuttle, pull out, let the enemy wipe my ally off that planet, then 'come to the rescue' to get the planet back or me...
but hopefully Diplomacy will find a better way to fix this...
on a seperate note, 2 things:
1) does anyone think there should be a time limit from when a planet is destroyed to when it can be re-colonised by friendly/enemy/your own forces? ive seen many games where the planet was destroyed and 1.35 seconds later my forces re-colonise it. its no problem from my point of view, but from a defender's point of view it would be a bitch...
2) should all orbital structures (or at least logistical structures, as opposed to tactical ones) be destroyed when a planet it destroyed? this would solve the problem of allied structures on a planet you own...