Yes, we can look at the ICOs that have happened and draw conclusions.
> And as fast as the sector is changing, how do we know what will be typical by the time new legislation is (a) passed
This isn't about new legislation. The Howey Test dates from 1946. The fundamental characteristics of ICOs are not new (and have nothing to do with blockchains).
> Many (typical?) ICOs are not companies
I have no idea why you think this changes anything. It doesn't.
> Which explicitly state that it is not an investment
As I already mentioned, fine print doesn't fix the problems being discussed here.