I have a 17, but no 16 experience to compare it to...
But as for the listed differences above, the winch isn't as prewired as much as I originally thought. It's more like 1 ground wire. (Maybe it's a really hard to run wire... I dunno. Haven't added winch yet)
The obvious difference that I can tell is they've added side safety bars for the passengers in the back. So if you're looking at a red one (offered both years), you can tell the year model by a glance towards the back. Of course if you leave the safety nets in, the added bars make things a little awkward with the hooks and tension. (Esp when dumping)
I want to drive a 16 so I can see if there's any difference in the shifting sound and program. I had heard there was some reprogramming there.
The AT/MT has "memory" from your last settings... so if you were in Sport mode AT and shift to park/neutral/reverse, then back to "H" - it goes right back into Sport AT.
Colors offerings are different. Mine is blue. 16' has a White and Silver that were the special colors.
(Always Honda Red!)
And lastly, the dealer where I bought, didn't discount the '16 deeply enough for me to justify. It was like $800 difference.
So I have a 17. I like it. I'd do it again for the same $800 if that's the deal today.