firstOrNew should use $values param to fill when existing record found

[patrick-radius]

Last week i kinda created a situation in our system because i (wrongly) assumed that the firstOrNew method was behaving the same as the updateOrCreate method minus the writing to the database.

But after looking at the framework code we found out that firstOrNew does nothing with the $values parameter when it finds an existing model.
Why not do a fill on the existing model after it found it?