Perhaps a mech with rockets kinda like the opposite for the HellFire?

I agree, but isnt a new mech, its a new Torso

they should probably not add a new torso, but just tweak lava scope by adding 30 rockets capacity and giving it a little explosive resistance.

much more simple than designing a new torso, then deciding what its stats should be, plus almost half the mythical torsos are designed to be used for a heat mech

I like this exact idea.

Gives 30 rockets, same health as HellFire, heat stats are the same as the energy stats of hellfire + vice versa, and the +5 resistance is in some other category.

This'll again grant rocketeers a free death punch strike (kinda like galaxsus B back when DP only used 20 rockets), allowing them to spend more modules building up their heat stats.

If there was a poll I'd vote yes

remember defense matrix still coming maybe that will have 30 rocket