Currently, you can only start other people's maps as Public tests, allowing anyone to join you. It can be difficult to organize guild or community games/events unless it's a Private test, which gives you nearly full control over who can join. Adding a Private Test button to other people's maps would be very useful.

Also, as the list of maps keeps growing, I think it'd be useful if you could favourite maps to quickly find the ones you like most.

Thank you!