Seems there's been allusions to this feature being implemented for a while yet nothings come of it. It would be ideal to have the option to set a filter for a station as one does with Age Restriction. Right now in your game library you can set the age range for each game. It's handy for offering parents a discounted "kidzone" option wherein I set a station with an age restriction so only the games I've marked for a certain age come up.
This feature has been useful yet with the way age restrictions work you can only build off of the selections starting with the younger age going up. If there were an additional filter option you could set games to be Group A, B, C, etc, and then launch certain sets of games based on special offers. For example, we've started a Thursday Buddy Night deal on -certain- two player games that run cheap enough to work with a discount. I have a poster showing which games apply for the Buddy Night discount (2 players, 1 hour: $40) but I have to remote launch them; it's awkward having them sift through all the games and telling them only which apply. Ideally if a couple wants the Buddy special I could just set their stations as 'Group A' and they'll see all the Buddy Night games.
With a launcher filter parlors could also implement a membership program for certain games (say, the ones with pay per month costs) or offer special rates on certain game packages. Right now the current model is an open buffet without the discrete means that actual buffets use to make their lineup profitable. Filter launch allows different price tiers and thus allows more catered options for different types of customers, better promotional events.