I really wish companies would stop redesigning things ... I wanna buy the same shoes I bought in 2013, and I want the same devices I had in 2016, just with USB-C and updated guts.
The look of the OS didn't need to change, even if the setting list needed to expand or the security backend needed an upgrade.
Heck, I put extra work into making sure every PC OS still looks like the one I used in 2012.