If you want to pitch something like this, go to the
Other Metagames forum, not here in the Suggestion Box. Do note that you should probably talk to one of the OM mods about it first (Specifically DTC or Birkal) as BST metagames have sprung up in the past and I don't think the moderators really found them interesting enough to "officially" support (I could horribly wrong of course since I don't work behind the scenes at OM)