Disclaimer: I'm in IT and my workplace is nearly all Apple/Macs. The butterfly keyboards are a bit love/hate and definitely not as robust as the pre-Touchbar keyboards. Issues/considerations for the Touchbar machines include:
failure of individual keys due to dust/dirt getting underneath. In my experience, it's fixable 90-95% of the time with canned air, the other times, you have to send it in. Also, when Apple has official documentation on it, you know it's an issue.
the early butterfly keyboards are almost as loud as some of the click-y mechanical keyboards. Some people don't mind, but I've had users tell me they get looks in cafes and coffee shops.
include dongle and adapters in your budget, because all the ports are USB-C.
more fragile design: the space tolerances in the Touchbar machines are smaller and thus more prone to fatal/major damage if dropped or struck. We've had a handful of users get cracked screens from being jostled around in their backpacks, so this might be an important consideration if you are rough with your machine or need something more rugged.
I'll be pretty happy to see them ditch the butterfly design myself. I also wouldn't mind if they made the chassis a little larger to allow for better cooling and general overall ruggedness instead of chasing the smaller-every-revision goal.