Aurelion Sol's W (and lack of sneakiness)

As it stands, it is fully intended by the designers that his orbiting stars be visible while in a bush, to prevent them from doing damage without being seen.

This makes it impossible for him to hide in a bush. (Though he still becomes untargetable with autos for being unseen.

Now, I have an issue with how the W works in the first place. It makes him extremely vulnerable to gap-closing champions, and conflicts with his HP-heavy build style. Instead of expanding outward, it should bring the stars inward, for a faster orbit and more damage on nearby enemies. He should be increasing the gravitational pull, not decreasing it.

Edit: I know that the health+AP items are his core because of their secondary effects... but that doesn't mean they don't give him HP. Having to cast his ultimate in order to fight someone who can get in close isn't a strong enough defense, considering those types of champions are extremely tough to play against as a mage in the first place. The change I'm suggesting would change his biggest weakness into a strength. I have an issue with his "ranged" ability being something with medium range that you can't aim like a skillshot, but that's another topic for another thread.