I don't fully understand how the AI upgrades units within my companions party so after several battles in army with them I pull their units into my party to see what I can upgrade and more often then none they are all upgradeable. Can we have the option to see what units can be upgraded within their army and do it without having to bring them to my army. An easy option would be when you interact with that companion, there is an option to upgrade troops for x$ just below the inspect troops option. We would have to be willing to accept the random tech tree that the AI goes with while selecting this option, and I'm ok with that.
