Nope. That would force everything that does not use the rescaling-misfeature to have a script. Objects that have a script can work around it already, so that would be mostly pointless.I see a problem here, if anyone uses an old mod (that expect the Morrowind behavior) and a new mod (that expect the OpenMW behavior) one of the two will not work correctly.
I think it would be better add a new function altogether like UnlimitedScale...
This kind of problems is unavoidable anyway. There will be a lot more changes like this and it is the responsibility of the content developers to use these features in a reasonable way. I don't expect them to be utilised in any Morrowind content stack. Any TC on the other hand should be able to use them freely.