ED has on several occasions welcomed documented feedback, so if you have anything documented, just send it to them.
They can, however, not build a sim based on peoples feelings expectations and varying sense of logic.
The ground effect have AFAIK been acknowledged some time ago:
https://forums.eagle.ru/showthread.php?t=213372&highlight=ground+effect
ED have SME's working alongside the programmers and the F-18 is still in EA.
Things just takes time. :)