Quoted from CrazyLevi:
But then you think about it...even an early code Stern is usually as deep as any of those Williams games. Even something like KISS as it is now. So I'll cut them some slack...games like Metallica and Walking Dead are just average releases until the code gets updated. They are working real miracles with the code and it takes time.
The more I play Kiss, the more I enjoy it. The code can absolutely improve, but Jesus Christ, the game has 4 multiballs, a wizard mode, hurry-ups, super scoring, etc. Combined with some difficult shots, it's still a ton of fun. Kiss plays kind of like a jacked SS game, but I think we've come to expect more with modern games. Kiss isn't abandoned or forgotten... It's just taking longer than anticipated for a killer update.