I'm sure we mentioned that a week or so ago, but when I suggested someone take him over, it was mentioned he's near some big players and therefore not the best target to take over.
It's a little buggy. Sometimes you can see the fleet, other times you can't.
No. It's consistent. You can see the ship composition on a planet only when you also have a fleet on the planet.
Do stronger warships have a better shot at taking planets than weaker one? I just had a SBS take a planet in the same turn it arrived, whereas when I send cruisers/destroyers it usually takes me 4-5 turns at least.
Just luck.