So interesting!  Thank you!

So the Uncles Trust set up the GST Trust for Bob.  Bob does have complete control over the GST trust (distributions, purchases, sales).

I am trying to get my head around this - if the GST Trust needs a 1041, then the capital gains are held in the trust, and income is subject to the tax rates of a trust.  Yet the whole idea is to do tax planning for a family and I'm feeling a bit lost as to how this actually helps a family plan for the future.  There's not likely an easy answer - but any suggestions on how to study this out would be welcome.  Thank you!