I'd really like to see board manufacturers dropping the sata connectors in favor of a u.2 or a mini-sas connector on mITX boards.
My ideal ITX would have an m.2 and an U.2, and nothing more.
I'm 100% with you there. Perhaps one day...too much in the way of legacy devices at the moment. I'm even still going to be using the SATA connector for the optical drive in my Bolt. However, in a future where we are down to no SATA, were I to still want to connect it up, I do have a USB to Slim-SATA adapter to take care of that.