I would definitely be interested to learn more about approaching VCs at the pre-seed/seed stage & pre-revenue/product market fit. Some questions I would love to see answered:
How do you raise money in stealth mode? (not saying that stealth mode is good, but it's crazy that people raise large sums of money before having a public facing product).
How do you get in front of VCs who haven't heard of you yet? This seems a bit easier in a Series A round as your investors can talk to your seed investors and there's probably a crunchbase page of your company.
How do you give your business a valuation before it's launched? I've been struggling a lot with this one, I've ran through the TAM/SAM/SOM but honestly feels like a shot in the dark still.