I disagree, max - once it gets overplayed, staff will mostly stop doing it & keep up on the normal servers - and people will start avoiding it!
I say we make such server, but only for the beta duration - and also, add space station to that beta-only duration - most people may hate it, but think about for a second:
We all know it's problems. We can avoid them. It wouldn't be that much of a problem to be a beta-only map & then removed from the initial release of FRG.
Tl;Dr:
Make a server that hosts both sandraiders & space station but only while the community's in beta.