When treasure hunter first came out, there was quite a lot more protean. It was easier to get. Now we are overloaded with stars.
Though, I do love the bonus exp you get from the stars. I think a even if it were just a minor tweak, adding a little more protean would most certainly make me and probably many more people happy. If you feel depressed, lonely, stressed, etc., then look at this forum post 23-24-906-66085893
No support, proteans are so ridiculously afk to use that it doesn't need to be made even more easier to get your hands on. Play the game instead, the double exp gain from your bonus exp stack is already OP enough.