The 2 separate system control panels are one of those quirks... freaking annoying.
yeah I don't like this whole sub divide between apps and programs and the varying control panels or *app menus*. It is like MS has dumbed down the OS (started with 8) with simpler menus and then left off any of the really important items you need access to which is hidden away on the control panel and other various older menus. For example Windows update has been removed from the control panel in win 10 now and you have to use the *app* settings menu now I think.
The only good thing about win 10 is now those menus aren't full screen at least.
I loaded up my surface pro and another tablet from 8.1 to 10 and it was fairly quick since the files were all downloaded. It probably took about 20-30 mins to load up then you have to spend time *fine tuning* or turning off all the privacy crap.
I don't need Cortana and don't care to search the web from my start bar, don't need edge, don't care for any of the standard apps ect. I already have a virtual desktop switcher, but that is probably the only big innovation IMO.
One annoyance was my Start Menu from 8.1 was erased which consisted of a lot of shortcuts to programs and other network drives. So I will need to rebuild that.
The new start Menu is better not being fullscreen, but I rarely even used that in the first place.
Some simple things like being able to easily slide the brightness from the charm is now gone in win 10 and you have to either use the set intervals or load up the settings panel is a step back. On a tablet I don't like the location of the keyboard
icon on the taskbar to activate it (not sure that cant be moved)
I don't know if I'm going to load up win 10 on my gaming machine yet.