This would facilitate backup of projects so that they could be run with exactly the same behaviour as when created.
I love the bug-fixes
eg I rarely understood the previous behaviour of DepthTest, and never understood my apparently arbitrary workarounds.
Now some of my old projects have problems that look DepthTest related, although I think there are additional issues.
BTW, will the multiple-instance facility of Magic work if the simultaneous versions are not the same?