So I haven't played MCH since the Heavensward days but I do have a few things. Just brainstorming ideas here.

1) Queen's Crowned Collider seems like it would be more suited to replace Roller Dash. It doesn't fix all the problems but it does help place it in a better position.

2) Wildfire is odd to me. MCH skills are mostly weaponskills now yet WF doesn't let you weave Gauss Round or Riccohet into it. Seems like a waste of potential to me. Also I'm not sure how people would feel about extending WF from 10 to 13 so you can squeeze 1,2,3 + Drill + Air Anchor into it. Also couldn't it be added to have an AoE effect?

3) Hypercharge is another one that confuses me. On one hand it adds potency to your main weaponskills yet it can also be used to bring GR & RC back up. Personally I think it would have been more interesting to lower the skill speed on the 3 main shots to really pump up WF.

4) Flamethrower is... hmm. I would have like to have it charge up your heat gauge so you can use it to build up auto crossbow (AC -> FT -> AC) but scattergun does that so... Maybe it could lower the recast timer of Wildfire? I don't know to be honest. Maybe a potency buff for AoE rotations.

5) Lack of party buff. Per SE's definition "Physical ranged DPS attack foes from a distance. They excel at inflicting sustained damage, and also provide support for companions." and yet it's the only one out of the three that doesn't give a damage buff. I'm not say it needs to be on DNC or BRD level but it would be nice to maybe have a small buff granted when the Queen when is out? Just my personal opinion.