Yes, although you probably want to calibrate your model if you want the probabilities to actually be meaningful.

Yes but optimized specifically for the purpose. Using that for "decision making" is also not a new use case, but turned out to be new to many people. Which is great, I hope they make something cool with it!

That's how Cygnet handles it.

https://github.com/blockbrain-ai/cygnet-recipe