I had the previous generation of MBP (late 2012, retina) and am now using the latest (mid 2017), both of the 15" variety.
I have had zero problems with my keyboard, though I acknowledge that this might just be luck.
I actually really like that all the ports are Thunderbolt 3/USB-C... but I wish more things supported USB-C to match. Like if the phone were USB-C, and if flash drives were USB-C, I'd be set. It's frustrating to have to carry dongles around, for sure. I loved the SD card slot and HDMI port on the previous generation because I used them somewhat regularly, so lacking those is a disappointment. I'd be much happier if I had four T-3 ports plus the SD card slot and HDMI port. The ability to charge out of any port is actually nifty, though; I use both sides regularly.
There are a lot of things I like better, though. I actually prefer the new keyboard (I hated how the previous generation's keys wiggled). The new screen is really phenomenal. The larger touchpad is really nice. The lessened weight is also a plus. Touch ID is pretty cool, though I'm very uninterested in the TouchBar (no strong feelings either way). And otherwise they're practically the same, except for moderately improved internal specs.
For me, the new model has been a net positive. I think if I were having keyboard issues like so many others, that opinion would change, but with my present luck I am happy with it.
I have had zero problems with my keyboard, though I acknowledge that this might just be luck.
I actually really like that all the ports are Thunderbolt 3/USB-C... but I wish more things supported USB-C to match. Like if the phone were USB-C, and if flash drives were USB-C, I'd be set. It's frustrating to have to carry dongles around, for sure. I loved the SD card slot and HDMI port on the previous generation because I used them somewhat regularly, so lacking those is a disappointment. I'd be much happier if I had four T-3 ports plus the SD card slot and HDMI port. The ability to charge out of any port is actually nifty, though; I use both sides regularly.
There are a lot of things I like better, though. I actually prefer the new keyboard (I hated how the previous generation's keys wiggled). The new screen is really phenomenal. The larger touchpad is really nice. The lessened weight is also a plus. Touch ID is pretty cool, though I'm very uninterested in the TouchBar (no strong feelings either way). And otherwise they're practically the same, except for moderately improved internal specs.
For me, the new model has been a net positive. I think if I were having keyboard issues like so many others, that opinion would change, but with my present luck I am happy with it.