Points 4 and 8 are about infiltrators and cavaliers. I have to admit that the options may not be the best. I have rarely strayed from warrior or priest classes so I have a hard time laying out how H/P could best impact their abilities.
*suspicious look*
Did you ninja-edit that, or am I just going blind?
Anyway...
A lot of what you propose is already handled by skills, and honour already affects how much every class can recruit.
What would you think of, rather than having higher H&P straight-up increase effectiveness, it unlocks different options within the class?
I'm open to the idea of allowing anyone to become courtier, priest, trader, and maybe even diplomat. I don't think it's appropriate to completely remove the entrance requirements to infiltrator and cavalier, though. Those are meant to be advanced, elite classes.
