We shouldn't be angry with Michael, he's our master at least and very active with the artwork in the SVN currently .. and perhaps even only doesn't want us to be disappointed if all our ideas fail (what many people might think). :/
True for me too .. I always write too much too. And edit over and over - could be seen as trolling too.
I read about it and it's why I think it would integrate quite nicely. And no complication too. Just add those mini-tribes and we have our mercenaries in a realistic way (we then might have nomadic mini-civs and you one-hut + a few fields tribes too - two problems solved with one solution: mini-cultures).
Still we could add mercenary training camps just like army entrenchment camp for the Romans is like, no? Placeable everywhere (like roman entrenchment camp & intelligence towers are already). There we could place the technologies to research and some extra candies.
And it would be an interesting target for being captured for enemies.
.. "oh I'm bankrupt. Why? Can't my tribe accept I'm a military leader only. Why do they complain they starve?"
No no.. I get your point. It's a good point actually. This way, we could even add to send some camouflaged "mercenaries" that offer being hired .. but in reality are spies (that we sent to them).
Just the real thing. Good we've written it down for later to remember ..