RE: What would you like to see next from Academy / MRC?
What about those (1/6th?) Scale buggies and trucks you had back in the early/mid 90s with the dual battery and motor. A revisit now with brushless and lipo would make them shine these days where before they were underpowered (and hence the low sales). There are plenty of people and tracks for 1/8th and even more who purposely convert their 1/8th into brushless systems.
It would save you having to go back to the drawing board from scratch. You could update the platform. It really was a good idea, just a few years too early to catch on.
Otherwise, (well more really). 1/18th all the way.