Potential to help out other junglers who struggle

In theory, why not come up with an item opposite the Hunters Machete, that invokes the purpose of the tank. Not to clear camps faster, but to clear the camps and survive with more health than a dps jungle. For example, after clearing 3 camps a Kha'Zix would survive with 300 health, clearing the camps in 2:30 seconds, whereas the tanky jungler like Sejuani would survive with 500 health, but sacrificing clear time coming in at say 2:50 seconds. I'm not sure what the stats would be but someone else might be able to help pick up on the concept. Thought? Ideas?