When us fans look back on Breakdown, we'll think of wasted potential. Prime's haters look at his death as one of their foremost pieces of evidence that the series is a failure, and Prime's defenders admit that this was a really poor moment. Breakdown had 2 plot points attached to him before his death - his history with Bulkhead and Starscream's ultimatum to him at the end of 'Operation: Breakdown' (make a chose between him and Megatron as leader). But, he was killed by Arachnid before either was giving a proper conclusion. So, the question is what were you more disappointed to see being dropped? Personally, I was more interested in the whole Starscream thing.