If the number of FSLs is ballparking the to be expected number of variations for a freelance contract then I don't think that framework will be an issue at all.

https://opensource.org/licenses/alphabetical

Not that many licenses really.

They don't involve payments, modifications, or deadlines, expressly disavow rather than assign IP claims, and don't have any local employment or contract law implications so the number of variations certainly isn't in the same ballpark

The fact the number of variations on the simplest possible EULA still approaches 100 does rather underline why lawyers are still used for more complicated things though.