Hi Thomas,
[...]
My guess is, that most users probably expect at least different seed values every time.
Maybe the help file should explicitely state the behaviour or a different way for deriving the initial seed should be used, e.g. taking the local time. Or a better PRNG could be used as well.
If we take the solution to initialize [random] with a different seed each time, an explanation on how to revert to the old behaviour of a seed value of 1489853723 should be mentioned in the help.
I think the main thing to worry about is if any of the patches written in the last 20+ years will stop working in the way intended by a such a modification.
I loosely remember that someone somewhen showed how to get a different seed every time using an abstraction. If such a solution exists in vanilla Pd, it could be added as a solution to the docs perhaps?