if I Dim an instance as NSButton, the IDE only offers code completion for properties and methods introduced for NSButton. All properties and methods of the super classes (e.g. NSControl) aren't available. Without this information at hand the instances seem to be very restricted although the richness is still there but not easily to be uncovered. The documentation can be read by the knowledgeable in this way, but isn't clear to the newbie.
I think it would be a great improvement if you enrich code completion.
MacBook (2GHz, 4 GByte) - Lion (10.7.3)
started Objective Basic coding in April 2010 - still enjoy it