That's a pretty good ppoint Griffin,
I also think that they weren't quite sure what they wanted to do with it in the first year or two, thye might still not be sure. lack of direction leads to lack of definition which is where we are right now.

generally though, it seems that apart from Prime and Megatron there seems to be a lean towards the G1 interpretation of a chracter unless that character just didn't exist in G1, like Dinobot and Waspinator and this year Bulkhead.

I voted for Wheeljack so far, mainly with the G1 interpretation in mind.
I would put in a secondary nomination for Bulkhead and Prowl if we were voting like the Australian political system...