The moral of the story is that no player--short of top of the draft talent--is a "high floor" or "safe" player. The mantra that the prototypical, big, gritty mucker is "safe" because he could conceivably develop into, at worst, a bottom six player has proven to be anything but safe as a strategy at the draft. Every player's floor is a bust, and regardless of skill set, busting is a substantial possibility whether the player is 5'5" or 6'5". There's just no sense in drafting for a player's supposed floor.
That said, guys like Dove and Twarynski could have had seasons like Bunnaman. You just don't know. Maybe they did see upside in those players, but it just didn't materialize, like is the case with almost every other mid-late round pick. This is less plausible with Dove since I don't think his game ever indicated an underlying offensive touch, but I can see them eyeing Twarynski like they did Bunnaman in this sense. But even still, Bunnaman is far from a safe prospect himself.