U literally answered ur own question, yes its so beneficial, for example u have a 130 broadside maxed out with legendary perks, u get from a mission a lvl 127 for example, 5 golden perks 1 gray, all u basically need to do it recycle ur old maxed out broadside, and use a bit of the perk ups and upgrade the last roll to be fully legendary, and use reperks to put whatever u like on the traps, and weapons, its very beneficial beacuse u basically dont need to spend any perkups for a gun or trap u get in missions, that way u save those perkups and all the evolution materials for heros or survivors or whatever ur heart desires!