I for one, would be profoundly interested in sticking with Unity 7 until I am dead or it is no longer feasible for people to maintain it. Loving it on 16.04. Plan to continue using it on 18.04. Used Xfce for years before Unity, but when I started using HiDPI displays, I found that Unity had the best support for them OOTB than all the other DEs I tried (and I tried them all). It is also a no-fuss DE that has some unique features by default which you cannot find properly implemented on others (global menu, workspace switching, and window spread for starters). I get all my work done in this environment, and it’s a pure joy to work with. Hope you devs keep gaining traction!