Earth Tile Seems Useless?

The "permanent" maximum hp does not carry over when a champion levels up. So let's say I have a level 2 jax that I've had on it for 20 rounds. So that's 600 bonus health. Once I get the level 3 jax, it gets reset back to zero. Seems like an irrelevant tile. The permanent bonus health seems like it becomes rather insignificant as the game goes on. Any thoughts?
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