Sikret
Have you considered creating/placing any NPCs of your own in v6?
It might be fun to recruit a pre made Vagrant or Riskbreaker (or even convert Minsc into one). The NPC may start off with no additional content but this could then be added for future versions.

I may someday merge the Mansur project with IA, but it's not planned for v6 or even v7.

Changing existing NPCs' kits is a generally good idea provided that the new kit fits well with the NPC. I have done this for Cernd and Valygar. But Minsc's character and personality doesn't seem to fit well with any of the new kits. Once I thought to change Mazzy to a riskbreaker, but I left that idea, because her character didn't seem to match either. She talks a lot about her desire/love to be a paladin (not to mention that I would have also needed to change the riskbreaker kit's racial requirements for that).