I would also like to see this change. I understand peoples' complaints that "oh, but it doesn't work for such-and-such job", and I get that, but like... the tanks still have a LOT of button bloat, and squishing the 1-2-3 combo, the 1-2 AOE combo, and GNB's extra 1-2-3 combo down to a single button would go a long way toward fixing that.