The thing is, there was no overlap between MM and RSV in WoD. The argument they used to justify changing it to melee was based on the general class fantasy of both specs focusing on the use of ranged weapons, despite how as soon as you looked at specific abilities and effects, or general themes altogether, they weren’t all that similar after all.
Here’s an example of what RSV could’ve looked like if brought forward into Legion, or brought back to present day WoW. Would that amount to a core playstyle that is the same as, or even similar to current MM? I’d say far from it…