First of all, thanks for mentioning my submod.
About bounty hunters, I myself gave some thought into bringing them in, but in the end it turned out to be something less than acceptable, even only on the drawing tables. Their main aspect(being a bounty hunter) cannot be implemented, since if a hero dies, it's over for him/her and this would make bounty hunters A; if can return extremely OP or B; if they can't practically useless other than an OP ground unit which shouldn't be there in the first place. This is something I always loved about ThRev (even before they took me in) that there was nothing there that didn't made any sense. For example: Jerec is with PA because Ardus paid his bills while trying to find the Valley of the Jedi, so there was a definite connection there, even if he was never really part of the PA. These bounty hunters might had some reasons to work for the warlords or remnant, but they didn't really lived with it.
Though a method I came up with to at least represent them as real mercenaries(since bounty hunters really were those) was to not just have a high recruitment cost, but to actually suck your credits while they work for you, using the same ability that gives Lando the +150 credits, just actually making you -350(what I came up with while trying to figure out what would be appropriate).
Maybe this little idea would help you work something out