Any events or properties that do not work properly
Any missing events or properties
Documentation errors
Event and property names
Some macro commands like writeln take a variable number of arguments and are not easily mimiced by an AppleEvent. Suggestions are most welcome.
Many commands operate on the ROI if present. Should that be made explicit? For example:
Clear -- clears the whole Picture
Clear ROI -- clears just the whole ROI
The macro facility treats some commands differently the first time through a macro. This is not so easy with AppleEvents.
Some commands like TextStyle use the text strings like their equivalent macro commands instead of uses sets of enumerated values as is recommended with AppleEvents.