Sorry, I wrote that description in 2 minutes and forgot that fun is relative. My issue with OOO was that the lack of bounciness made for a pretty... lifeless experience. I'll work on the aiming, and the bounciness.
As for the max size orbs: firstly, there's the little green orbs with arrows that destroy the first orb they collide with. Maybe I made them too rare? Secondly, I thought that [not allowing max orbs to be combined] would be kinda necessary for the game to end at some point. Or maybe it would be better to make endless gaining possible and easier?