Wow...that sounds very positive!
I know you've had your reservations with Apple products (especially portables)...since Apple took away a lot of the user upgradeability years ago. I think my wife's MBA is a 2015 model...and she also got one of those cool hubs recently with all sorts of ports.
I REALLY got to upgrade my main computer soon. Still using my 2011 17" MBP. Kinda still amazing how much I can still get done with it. It still has a "spinner HD" in it (which I replaced within the last 12 months) thus a pretty new drive. The biggest complaint I have is slow shutdowns, slow reboots, and slow launching of apps. I think a decent size SSD would really breath some new life into it.
- Nick