Regards to Special Fire-type moves: We all know that most physical Fire-type moves (Punch, Fang, Flame Charge, Flare Blitz) are either low on BPA or carries too much risk in recoil. So the special spectrum is the way to go if we're to score Fire-type coverage. Overheat is the undisputed move in terms of BPA, but look at the drawbacks -2 SpA per use. This will be a serious drawback to encourage people to use it for special sweeping purposes, though it would do okay for the attacker sets. So why not allow Flamethrower, or just Fire Blast? They provide a more stable Fire-coverage that allows for longer stay-in power. With Overheat, Hydro Pump, Blizzard, and Thunder as pretty much the only allowed special coverage, we're limiting what Aurumoth can do as a special sweeper, something BMB wanted it to do as freely as possible without overpowering it. Yes, these moves aren't necessary. But you said so yourself, BMB - just because a move is Allowed doesn't mean it'll make it to the movepool submissions. We have Aura Spere with Focus Blast, Blizzard with Ice Beam, Thunder with Thunderbolt - so why not add another Fire-move for flexibility to the movepool makers? Regarding the Final Gambit, I'd say allow it, too - except that it doesn't make the strategy anymore riskier than "come in on least number of entry hazards and attempting to kll off a threat with Base 110 HP".