I really love using deepin since i installed it yesterday. This linux distro is nicer than any other distro i've tried before (Suse, Elementary, Mint and Makulu).

I have several (minor) suggestions :

A. Taskbar
1. Efficient or classic mode: there should be a feature to hide some tray icons in notification area (With arrow to expand), so it won't take a lot space.
2. Smarthide: it's quite slow to show taskbar. It should be instance show.
3. Taskbar should be configurable but keep it simple: change launcher icon, move taskbar to top screen, set taskbar height and opacity, change shortcut icon.  
4. Option to show second on clock tray icon and mark custom holiday in calendar.
5. Tray should have builtin clipboard manager

B. Store
1. Ability to add and remove PPA
2. Hide not found package

C. ISO
1. Reduce iso file size

D. Application
1. Add more customized deepin app: Startup app manager, note taking app