Chamochin,
Completely understand where you are coming from. I will just say that at its core philosophy ICRPG is a toolkit to run games the way you want to run them. It started out as d20 ‘hacks’ to make B’s table games run more aligned with his particular style. So he compiled his particular style into a game/toolkit that has now taken over this corner of the internets, and continues to expand out into other rpg nooks and crannies.
For those of us that love to fill in the blanks, it is a beautiful thing! Give me a framework and let me make it my own!
For folks like yourself that want/need a fully fleshed out written module that covers all of the bases without you having to do any legwork… well it may fall a bit short.
ICRPG(using your restaurant analogy) is like Hibachi. All the ingredients are there, you just need to tell it which ones work for you!
If you want a good one shot that really showcases the power and beauty of ICRPG, pick your favorite from amongst the OSR, 5e, etc, and use the ICRPG mindset to run it on the fly! Similar to OSR, there is no real concept of ‘bounded balance’ in ICRPGs mindset, so if you’ve ran OSR games, you can run ICRPG in the same manner.
Good luck!