Klaus D. Witzel writes:

 > > whereas requiring a new VM for a new image to run at full speed is fine  
 > > by me.
 > 
 > That's perhaps the best way to distribute it, as an optional .mcz package  
 > (the user just recompiles the VM), together with the changes to the  
 > Collection hierarchy. So the burden is not on the VM maintainers (and  
 > other maintainers). Applying kiss.

Distributing as an optional .mcz package is sensible.

Bryce