why isn't health reg on jungle items scales with level?

i just noticed that i still get 10 health per second at all levels

should devourer and Warrior get a percentage of their damage dealt back in health? (like after buying the item and it's enhancement) i'd Argue adding Magus to percentage damage worth of health back, but i don't know...maybe a small percentage of health back and slightly better mana back?

while Cinderhulk and should stay the same except with better health per second scaling

just some ideas on the health reg departments

all of those are _JUST _suggestions, and i want the community to tell me why would that be good/bad

but seriously, why do i still get 10 health per second at level 11 and above? it's almost un-noticeable