I actually had to make the exact same jump a couple months ago. My 2013 MBP wasn't really slowing me down but I was giving it away to my family instead. I had a

I actually had to make the exact same jump a couple months ago. My 2013 MBP wasn't really slowing me down but I was giving it away to my family instead. I had a lot of hesitation when it came to touch bar but the that was way too much easier to get used to than what I thought. The keyboard I'd say is a lot better than the 2018 versions. I've used a friends 2018 MBP where I had issue with repetitive keystrokes or no keystrokes at all, it's been two months I'm using mine and haven't had a single issue yet. I think if you need it now you should go for it. There are always gonna be changes, updates, redesigns just like how it has been since 2013. If you're in need it of the tool now it's less like that the next update will have a meaningful impact on your work that's worth to wait.