PlanetsCentral

PHost decides once that the mission will fail ("oh crap, I cannot get the engine to start. I'm back in my bunk."), not for each found victim ship ("oops, we cannot get through their shields; let's try the next victim").

I tend to consider Tim's behaviour more logical here, especially given that RobCloakedChance works the same way (tested for each victim) also in PHost. Any other opinions on that matter? Then I might even change it

I think per-ship makes more sense. If you could make the change then all the Pirates in the galaxy will thank you... and everyone else will be mad.

Separate from the decision to change the rob failure from per-turn to per-victim, I think PHost should definitely be changed to only send a message about the rob failure if there was a viable target for robbing, if the mission is set to rob but there are no potential victims around then the Pirate wouldn't really know if things were going to fail because they never tried. It just adds confusion to the Pirate player seeing false warnings about robs that never happened.

But if you're willing to change the PHost behavior for RobFailureOdds (and the documentation, of course) then I'm all for that.