I always liked Lexy Lightspeed, but not enough to own it as a single pin. I also liked the idea of p3 being multiple games, but cannon lagoon and cosmic cart racing, didn't quite feel pinball enough for me to consider those full games for home. This all changes with Heist. Now I am seriously considering owning a p3 in the future because now with Lexy and Heist, I look at those as 2 full games in one platform. Also Heist gives me hope that more full game modules will be coming in the future.
Speaking of future games, I love that the multimorphic team encourages people to build their own software and even game modules for the platform. I would love to see some boutique companies building more p3 games.
The homebrew builds on pinside are amazing, but if I were to ever try something similar on my own, I would definitely lean towards using the p3 to build a standalone playfield module instead of building everything from the ground up.