I guess it depends on play style. I main Oscar Mike, and pretty much always play Meltdown (not a huge fan of Incursion. Meltdown feels more balanced). K/D is never my priority. First priority is always the M1 Shepard, followed by the smaller Blade Bots. Only once I’ve cleared the majority of them and see that my Minions have pushed past the threshold do I go for kills.
But I guess its like you said. If you’re hanging back and going for kills on enemy Battleborn? You’re not playing the game right, and I guess that’s kind of your point. At the end of the day, BB is intended to be a MOBA, and objectives are a fundamental basis of MOBAs.
I can’t tell you how many rounds of Meltdown I’ve won, because everyone decided to get into a Team Fight over at Left, and I just soloed Right and pushed right through Wave after wave of bots, spawning Elite Bots when I could.
Granted, that’s kind of his role.
Aside from maybe Toby, who from what I’ve seen plays better for just suppressing fire, all the other guys you mentioned can play the same way. I’ve played Marquis and camped the sniper box, or on top of Mid, and just went for the Shepard every time. Hell, my K/D was probably less than one as Marquis, because once I took out most of the bots the enemy came after me, and my squishy robot butt couldn’t handle the abuse XD