Page cache with url parameters

Hello,

Noticed that a page is not cached when there are GET parameters in the url.

Parameters like utm, etc can be ingored and result in cached pages.
But what about other custom parameters?

In general, why not caching such pages or provide an option to set specific parameters that can be ignored?
eg.
when having example.com/?param=low & example.com/?param=high it could generate 2 static page and serve the next users the right one accordingly.

Thank you!