1. PHP Composer UI - It would be great to have a UI for PHP Composer, just like Plesk got.
2. Introducing possibility to specify Spam Blocklists like spamhouse
3. Better "List Websites" overview:
- Visual SSL Status (right now its always "Issue SSL)
- How many Email Accounts, Databases, Child Domains
Generally: It is visible that the design is not done by someone with extensive UX design. Lots of white space, hard to read text, buttons because of color choices. Please consider to involve a UX designer for a good theme.