For a major update to this distro it is. Mint is the reasonable middle ground in a sea of partisan battles and "UX" disasters. The past couple of years has seen Shuttleworth slam Ubuntu's rudder over to starboard with Unity as the ONE-true-way, then MS followed suit with Metro as the MORE-ONE-true bastard child of Unity and IOS, and Gnome passed the Jonestown kool-aid with Gnome3 as the ONEST-true-way. I've lost count of the number of major companies and orgs that decided to shove their half-baked ideas into production; usability and feedback be damned.
By contrast, Mint's "Mr Neutral" Clem provided support for a variety of GUIs while focusing on the underlying stability and functionality of the OS. Remember way back when Gates derided the notion of an OS that just improved stability and performance without introducing a slew of new features? He said Microsoft would never do that, and this was a dumb idea. Well, Clem did the reasonable thing -- he and the team worked on stability ad performance... with a *choice* of new UI features. Take it leave it, love it or hate it, you can't deny that Mint gives you tons of operational/UI choice while resolving much of the technical bustedness that has been a weak spot for Linux acceptance.
I'm typing this on a fully configured Mint 17 system. I booted from a live USB drive at 8:38pm, and the install from bare metal was complete by 8:44. Connected to the wifi and had all updates pulled and installed by 8:55pm. A few quick tweaks that any newbie could do, and I'm up and running with a fully current system, office suite, media tools, with tunes playing in the background, and *everything* just works -- in about 20 minutes. (I played with it over the weekend on a bench full of systems, and have yet to find a recent HP, Lenovo, or Dell not fully supported.) With Mint I get the "just works" simplicity of OSX with the ass-kicking power of Linux, and in another 20min I'll have Wine installed with my genuine copy of MS Office (Visio if nothing else). And I still have the linux-just-rocks no-click configuration of my office scanner without downloading the 350mb driver package for Windows. Mint is happiness for total luddites who want stuff to look like WIn95, while maintaining compatibility and app-management consistency with faux-modern-minimalists who want the UI to look like an empty white room. Take your pick... it just works. I actually *enjoy* using Mint.... and so do the less-geeky people who just want to click and do stuff.
This is what an OS should be.