Mobility junglers are sneakier than Eve
Anyone who can jump over walls can get almost as close as Eve without showing up on wards unless there are multiples down. Namely, Lee Sin, Rek'Sai, Vi, etc. Yet, while each of those champions has a huge amount of combat potential, Eve is given dumpster stats and an impossibly out of focus kit. Later, each of those champions scales to be at least moderately useful late-game while Eve falls off viciously hard.
If her stealth is barely sneakier in a gank than [insert mobility skill here], why isn't she allowed to have halfway decent combat?
just shows up in your lane...