I can say that right now Linux doesn't work too well on the MacBook Pro with TouchBar. It's touchpad is so big that you need decent plam rejection and I heard Linux also lacks some drivers. I'd imagine the TouchBar itself may be an issue. Having said that, personally I'd encourage you to look at the Dell XPS 13/15 if you're not going for a Mac as it's (in my opinion) much closer to a MacBook in build quality. It also has Thunderbolt 3 over USB-C too. Gaming on the MacBook Pro is hit and miss, you'll get medium settings on recent games but you may find balancing quality and framerates to be hard. It's not designed for gaming.