Ah yes, the immersiveness of "Here's a bunch of toys to play with in Dishonored. If you use any of these, you're a terrible person and get the bad ending."
The menus and inventory for The Blood of Dawnwalker and The Witcher 3 are virtually the same and I'm not mad one bit about it.
Shared DNA between these games is a great thing, and if it ain't broke don't fix it.
Each faction has its own unique Levy, Household, and Mercenary progression trees - giving you plenty of ways to shape the army you want to lead.
Just make sure you can afford the upkeep. 💰