Sales Kits - Stock and Packaging

I have been looking into Sales Kits recently and while the overall concept is straight forward, there are some nuances that are throwing me a bit.

Looking at Fixed Kit FIN009 in the demo data:

1 - this product has been parameterized as Stock Managed.  If a Main Kit item is not a real physical thing, but rather a collection of products, how can it be stock managed? 

2 - only some of the components are eligible to be packed.  The mouse, the keyboard are  for instance, but the CU Dual Workstation(FIN010), the RAM(BMS058) are not.   If the RAM is meant to be inside the workstation, that makes sense kind of... but why would the Work Station not be packaged?

3 - the main kit item, FIN009 is set to not pack on the product site.  This makes sense, because its a concept, not an item.   But , if i wanted to make it a packed item because I really want an SPACK record for it, would that cause any problems? 

thanks for any insights.