I don’t agree that a 500 man county, should have the clout of a million person county. It would serve my political views to go for it looking at the map you provided, but it wouldn’t be right. It’s not proportional.
The Electoral College addresses that by equal representation.
Yes, gerrymandering is real, and it probably always will be. Not sure how you stop it.
There’s no way I know of to be definitive on this. That’s all I’ve got to say about it for now.
Take care.