Before I make My suggestion I would like to say that Objects in labview have been my savior. My code complexity and reusability have improved ten fold. It has allowed me to integrate templates including glyphs and artwork into base classes which greatly speeds coding.
In recent times, LV has allowed auto-coersion of references to objects to a lower, common class - yey!.
I would like to see polymorphism/function override support "ByRef" dynamic dispatch as well.
Right now I have to create a base class byRef function to access the object and then call a polymorphic VI to execute it.
This forces the creation of an extra vi per function call when I use objects byref.
iTm - Senior Systems Engineer uses: LABVIEW 2012 SP1 x86 on Windows 7 x64. cFP, cRIO, PXI-RT