I agree, but I also think expectations need to be reasonable. I think Stern should fix reported "bugs", but I don't believe at this point it's reasonable to expect additional functionality. This game is already really fun imo.
I'm a software developer and I can confirm that coding is very expensive. I also have a degree in economics and I understand that as a business it is not feasible to invest more into a product than expected return. Keep in mind any enhancements they make to the game will introduce additional faults, ehich will cost more money to fix. Where will this money come from?
Kiss is already an awesome game. There isn't much they can do without a significant investment to improve the game. I won't hesitate to buy the game back at some point even if code stays the same.
If you like maiden better sell your kiss and buy one.