The start menu still uses tile-like buttons, and the windows are "Metro" style. I don't particularly care for the look. The "flat" looks with 16 colors are a step backwards, trendy or not, and I include Apple with this. It looks like some sort of accessibility mode has been enabled for people with poor eyesight.
I've been in favor of every Windows upgrade (aside from ME) since WFW 3.1.
95 gave us a native TCP/IP stack and DirectX. XP looked a little too "Playskool," but the NT kernel tradeoff was so worth it.
Vista was a nice visual upgrade and provided fully-baked 64-bit support. The driver issues were largely overblown and non-issues after a few months anyway. The sidebar was useful for displaying hardware usage. My biggest critique was the price and SKU explosion; the introduction of crippleware at the OS level. Market segmentation might be a good business practice, but insulting knowledgeable customers in the process generally is not. Meanwhile, "Ultimate Extras" proved to be a code name for language packs that were useless to many, many people. Still, these were not criticisms of the core OS itself, just the business practices surrounding it.
Win7 refined the Vista UI and added stability, booted significantly faster, search indexing was improved, and revised UAC (which I had previously disabled) made the feature more acceptable.
Meanwhile I get nothing in Windows 10 other than an interface I don't care for. If XP had been nothing more than a re-skinned Windows 95 with all the same features, I wouldn't have upgraded then either. I'll stick with 7 until they EOL it or introduce a compelling reason to upgrade. I suspect that they've run out of compelling features to add. It would require a sea change in core hardware that we're unlikely to see in the near future -- 128 bit processors, or quantum computing. The feature set of OSes seems to be mature at this point, much like the core controls of vehicles. At this point it's just change for the sake of change, which is a waste of resources.