I'm kinda surprised that HPI hasn't at least thought about producing some lighter weight composite chassis components. I mean, I didn't realise how heavy the upper front bulkhead was until I pulled it off one day. Replace that (and other pieces like it) with graphite composite, or shave some material off them (or both) and HPI could save quite a few grams here and there.
Just a thought.
I just hope if they do try this, that they don't do what Trinity did with their lightweight components, and make them a funny looking grey color!