I agree, the storyline felt a tad rushed in Unity. I'm hoping it's being rushed for something really big in the upcoming months.
The whole Faith on a Unity felt to me like they were trying to appease fans of the character, as she isn't in any books currently. It felt kind of half assed which is maybe why I wasn't leaning towards being in favor, or against it.
The whole Renegades cast not being in a storyline right now is sad to me. They're so enjoyable to read.
I imagine Imperium will shed some light on their whereabouts eventually!
The armorines felt rushed but I'm fine with it as The Dead Hand is coming next! Really, really looking forward to that, it looks great!