- Increased margins/padding: At first, I thought it was a waste of space - but things are now easier to click on. I realised this when loading an older version on another machine. I'd still like to be able to tweak this - the document tabs are too padded.
- The main menu was hidden inside a hamburger menu. This was nasty - fortunately there's a "Show main menu in toolbar" option. This really should be on by default for non-mac.
- I wasn't keen on the darker colour scheme, I switched back to the old dark - it took less than a minute to learn I actually prefer the new one.
- Can only have 4 docked tool windows open at once (2 side, 2 bottom).
- Toolbars are easier to customise, but I wish I could combine the navigation bar into it, as I only have a few buttons on the right.
- The bright blue "run/debug" toolbar is distracting
- I've not noticed any removal of colour from the menu icons, and there are no animations
Overall, there isn't much to be upset about - took me minutes to get used to, no nowhere near as bad as the Visual Studio 2013 UI refresh.