The way fleets are set up will always cause a difference of opinion where Sobek is concerned. The Bonus is "100 Percent Negates All Motherships In Attack/Raid Battles- Own and Enemy". This basically means that the MS is not involved in any attacks. Is conquering a planet an attack? It would be fair to say that it is. From this, it would be reasonable to assume that the MS, which carries the fleets, does not turn up for the battle when you are trying to conquer a planet. No MS means no fleets. No fleets means no conquering of planet. This means that people in Sobek should never have been allowed to conquer planets.
Whilst I think it is funny that Sobek can no longer take planets, but can lose them, it is unfair. Likewise all three combinations involving planets with regards to Sobek is unfair.
1 - One side being able to take a planet and the others can't = unfair due to obvious reasons.
2 - Both sides unable to take a planet = unfair due to having untouchable planets. The Sobek house is to protect the MS, not MS and planets.
3 - Both sides being able to take planets = unfair as fleets are unable to be destroyed so planets with defences are ultimately defenceless.
Both points 1 and 2 above are not workable and can be extremely unfair with no work around. Point 3 however can be improved. Treat fleets like MS weapons ie they can be destroyed. This would even things out a hell of a lot.
Personally though, I think that Sobek should be scrapped (if not all houses). There should be no house bonus that 100% protects something that is used to help determine rankings.
It was mentioned earlier that those who were not happy with how the bonus of Sobek worked before the latest update should have simply took it over and booted people from it. That was an option, likewise there is the option of those in Sobek now to leave now if they dont like it. I know EPA will cry about that as most of the other houses will not benefit them in any way as most of the other houses offer benefits to stats... which they do not have, but hey, that is the game we have for the moment, so get on with it.
PS, it is not as if Sobek can't get new planets now. They can use their MTs and create a new one