3 things for me...
I'd like to see entertainment synchronization. No more of this "it's available in the US but nowhere else in the world". One reason some people pirate is they just can't get the stuff in their country. We should be free to choose our personal entertainment experiences, and that means all music, TV, games and movies, available worldwide, at the same time. They do it for many movies each year... do it for everything.
And of course, Operating Systems; I'd like to see Linux come of age. To run everything that you can throw at it (better than Windows), and all games, applications and media will just work. Coming of age means simplification of tasks, stability, compatability and of course major UX improvements and a reduction in terminal dependencies.
Windows 10 is going nowhere. It's just Windows 8.2 really. It's a kids toy for the visually impaired and people who have no idea of security, privacy and real computer work (eg. Social butterflies).
And Lastly, no more "online-requirement games! I have boycotted several games purely because they require me to be always connected to the internet.
@Dookiedraws.. A TB SSD for under a $100... Yes! That would be nice.