Agree with pretty much everything TreBo mentioned. Firepower is fast and keeps you on your toes. Spinner shot rips, and lock stealing is minimized due to clever programming. No real incentive to play multiball other than to watch the displays and lights do their thing. You can’t blame it for being shallow since it was blazing its own trails. In an interview Eugene Jarvis said something like “we were just trying to get the damn code to work” when asked why there was no multipliers.
Cyclone is good too, but in a completely different way. The Ferris wheel and zigzag ramps sorta bog down the gameplay, but the game shoots well, and the rules are good enough where you forget it doesn’t have multiball.
Off the topic of the 2 titles, If you’re looking to add an Oursler title to the lineup, BSD would be my pick. Kinda checks all the boxes.