The ring is an awesome feature.....but

[liseke]

simple solution to your final problem arc:

display all scenarios in the list, but allow only x amount to be "active"...

soooh, say you have a list of 50 scenarios, of which only 15 can be active at one time. Add a counter to the top of the window to show how many "activity slots" are available, so players aren't surprised if they can't launch the scenario of their liking.

The maximum amount can easily be raised if more server resources become available.