My issue is not selecting multiple choices of the same model, but wishing that I did not have to keep going back into the hire model menu and scroll down.
For example, if I were to want to hire both raphael and remi for my crew, I have to scroll down to where they are, select one, go back into the hire a model screen, scroll down to where they are again and select the next one.
I'm not sure how much work would go into making it so that I could just scroll through the models and selecting which ones I would like without going back and forth between screens, but it would speed up crew selection.