I'm a huge G1 series 3 fan but there's a bit of imbalance on my display. On one side I've got

Autobots
Rodimus
UM
Kup
Blurr
Springer
Wreck Gar
Sky Lynx
Wheelie

and on the other

Decepticons
Galvatron
Cyclonus
Scourge
Soundwave
Runamuck
Runabout

Any decepticon character suggestions to even things out? (Not including combiners or bases - as I already have these). More influential series 3 figures preferred. I can't be bothered watching the eps again. I was thinking astrotrain or maybe octane.

Also, would it be prudent to assume the G2 line will increase in considerable market value (on par with g1) over the next few years?