What I expect from Windows 10 for phone is:
1.Better multitasking, fast switching between apps without resume screen.
2.Sort setting page on firm of groups.
3.( I know some people wont like this but its my personal opinion) android app compatibility
4. Keyboard skins, themes
5. Better notification action centre
6. Live tiles should be more live like we should be able to control music app actions like play/pause/forward/backward from tiles itself.
7. Background colour should be able to change apart from black and white.
8. Enhanced graphic drivers

irectX12 should be able to handle graphic intensive games smoothly on low memory devices.
9. It should be more open for developers like it's Windows PC counterpart
10. Finally I would like live wallpapers and also more stable live lock screen