I'm in favour of good ideas but (though I haven't read through the whole thread) in response to the OP, I don't think it's really down to WGT to take this on.
As courteneyfish said clubs can use the info button in the CC directory...
they can explain what their club is about by articulating it in the forum (CC Corner)
but more than that if they're going to be taken seriously they should have a decent website separate from WGT that informs 'would-be members' on everything they might want to know about the club before getting involved.
If they don't have a good and informative website you can usually assume they are just another badly organized, mickey-mouse CC (like so many on WGT).
A well-organized and well run club will have everything and more for prospective members to consider prior to joining, so it's down to the CC to present itself well and down to players to look for the clubs.
...and if at first you don't succeed, try again!