If I had it my way I would have gone back to hw iteration of mch and build from there, cast times and all. SB iteration even though I enjoyed it was a mess and shb is enjoyable but has some flaws. Honestly I could see using the shb heat and hyper charge to temporarily get rid of your cast times and reduce your main combo gcd to 1.5 like heat blast as an example.

Wild fire Honestly would feel nice if queen damage worked with it and damage your team mate does counted in some way. Flamethrower they could make it like the pvp iteration where it leaves a dot and you can interact with that dot with certain skills