It was really nice when they hid a dragon in the mine. I never found any but there was the hope for one. Shame they did not leave that in the game and it was there for just a very short time.
I like your idea for the bonuses but if past performance is any indication....i do not think the prizes will improve. Look at the newer spin to win wheel. Gee last one i got 55 points and best was 105. No hope for that.