Im not sure what lvl is required but we are only GH4 and have salvage guy. As soon as you enter the GH on the right is steps up the wall and its right there on the left.
Ive seen about a 10% loss its not terrible still make paingiver enough times to not care, might have to change rotations but im getting better dmg from encounters and brood than tyrannical -SW HB 2800
I would add something here but Rumble said it all. Feel free to shoot me a message here or in game if any questions or want to know more. "Teamwork makes the dream work" Morrigan@aheeokillertofu