I just think it could naturally be worked into the game via quests. Like Rumah village, Frisha needs a job, Verana is an industrious kind of woman. The two of them aught to pair and start selling clothes/lingerie/makeup. Also, you could have that one lady who does massages open up a spa/onsen eventually too. I am all for putting these ladies to work and building up the arenwald economy. Also, the king needs his taxes!
There are other issues too, like Tia/Lyvia never visiting the bar. Why can't you take Kate home with you? They seem like little nitpicks, but it'd make sense that you should be able to invite just about anyone to your house (when you finish the remodel). Also, with the mc fixing up Rumah and then establishing the mercenary camp, those places should get visitors like that merchant girl who I forget her name. Also, why isn't Imawyn a recruitable party member? Her magic would come in pretty handy and she knows how to swing a sword.