it could work if they agree to just be underpowered, like they have parts of each class' standard kit and it mostly doesn't work well but every now and then they can get some sweet sweet synergy from some abilities and save the day.

And because of this José always feels a bit left out, so he's always eager to do something useful even if it's just casting mage light (which is one of the few spells he can wrap his head around).
He's also just generally a really nice guy and he's great at mundane things like cooking and he doesn't complain, so he doesn't quite realize that his party is being pretty mean and taking advantage of him. But over time the others just can't help but start considering him a close friend and he becomes a vital part of the team.

Thanks, something kinda of clicked for me now, gonna give another try with this in mind