Linux Mint 13 "Maya" RC released
blog.linuxmint.com
blog.linuxmint.com
Users can select either the main distro (current release 13), based on Ubuntu, or the rolling LMDE spin, based on Debian Wheezy. Unless you are very comfortable with Linux, and specifically with Debian, I highly recommend the mainline Ubunty-based variety (Linux Mint 12 and now 13).
So if you are sick of the Unity and Gnome 3 madness, and just want your desktop back, give Linux Mint with Mate desktop a try.
I also wouldn't worry too much about what desktop options I'll have in 2017. The options available at that time will probably be very different from anything we have now.
Also, I'm confident that Mate won't be experiencing any major compatibility issues for several years from now, if ever. Along with Cinnamon, it's now the main desktop environment for the 3rd largest Linux distro, and the fastest growing one (Mint).
BTW, I like what I've seen of the Gnome3 SDK. It's just the interface that I hate. I don't understand why all the biggest distros (except for Mint) are moving toward exclusively offering a mobile-like OS for desktop. I could totally understand a special edition for netbooks, but Unity is now the only interface officialy available for Ubuntu. It all seems to be part of the dumbing-down of the desktop. Given that the biggest group of potential Linux users are Windows power users, who love being able to modify every little facet of their desktop OS, I just don't get it.