Zac Buffs - Here are some idea's
1). Stretching Strike should be able to pick up Bloblets 2). Radius of his unstable matter should increase per rank. 3). Increase thet movement speed bonus (make it take less time to get maximum speed) OR the slow percentage of Let's bounce. It feels very underwhelming.
4). Or you could just make it so all of his abilities grants extra range depending on how big he is. I don't think his size changes any of his abilities at all.