The thing with Barcus is that in the Grymforge, you can say to him go to my camp. And he actually turns up there. So, it wouldn’t change that much to let him stay in your camp. It wouldn’t change his story, because he is going to Baldur’s gate either way, and because he is a terrible adventurer, letting him stay in our camp is safer than him going there alone.
But I understand what you guys are saying, and your worries.
I just want a short-race romance option, and he was the guy that I could think about that could work

But like you said Fylimar, if Larian make another gnome artificer as companion, I would love that too!