The Laje booster is pretty funny, look on their web site and it was 'added' to their web shop sometime in 2011!! I didn't know about that one specifically, but one of the racers in the uk made and marketed one under the 'rc dynamics' brand. I think I had one of the prototype ones at the 2010 worlds.
I agree on spec tyres, I don't know why 12th doesn't go that way. I think it should. At least it would remove the myth on tyres. Sure, sometimes many years ago there might have been some funky stuff around, especially at some of the tarmac worlds races. I don't believe that it goes on so much now. I think some might like to believe that is the reason, and of course some brands are better than others in certain conditions.