Chipmunk had nicely harmonized controls but was a bit underpowered and needed a decent inverted fuel system
agree with this and the comments by Shaggy
I'd agree with him on both counts. And I'd add that a CS prop would be good when aerobatting (constantly pulling back what little power there is to avoid overspeeding the engine in aeros does nothing for conserving height).
But with those changes it wouldn't be a Chippy, wouldn't have the character. That's why I flew a Yak52 for a few years. Missed the Chippy, though, and returned eagerly to my first love when the Yak group folded.
The aircraft that I think fits this is the RV8, possibly some of the others in the RV stable as well, but do not really know these, and, nice as it is, too new to be a classic (yet).