Need more improvements:
1. White label and resellaer option
2. LSWS cache
3. Backup storages as free cloud storages such as GDrive, OneDrive (AWS S3 is expensive for large capacity)
4. Ability to create client accounts (not enough team accounts)
5. Inbuilt file manager feature.
6. Application level PHP version change facility.
7. Inbuilt load average monitoring facility.

I think that's all. If you really want to beat cPanel and Plesk.