I'd like to add that one rationale that was discussed during other UCM poll threads was whether or not these toys would be considered to be meaningful Transformer action figures in their own right. The basic way to answer this question is to ask yourself, "Would I buy this toy if it were sold on its own?" (and you didn't necessarily intend on buying another Transformer to interact with it)

For example, would you buy Chopster if it were sold on its own and you didn't necessarily intend on buying another Transformer to interact with it? The Armada Mini-Con Rollbar on the other hand has better inherent play value as a Transformer action figure in its own right. In fact, IMO that Mini-Con is a better Transformer toy than Scavenger! On its own Rollbar is a lot like a Micromaster and has the same play value. Chopster on the other hand has the equivalent play value of a Nebulan, which most people don't count separately.