This is from another thread, but would be a more possible solution to MSV and giving Hunters what they wanted as a melee option.
BM has been in WoW lore the melee spec and would require the least amount of redesign:
Barbed Shot => Lacerate
Cobra Shot => Raptor Strike
Kill Command => Kill Command
Bestial Wrath => Bestial Wrath
Only two abilities would change to melee.
Then Blizzard would just have to take out Raptor Strike, Kill Command, and Coordinated Assault then reintroduce Explosive Shot back into MSV, so we have RSV again. I think Wild Fire Bomb fits more than Black Arrow, or give other bomb choices, like shrapnel bomb or sticky bomb, RSV core play-style should be poisons and elemental damage, not magical leave that for MM.