Would possession of a collapsible stock justify intent if I didn't own a pre-ban rifle?  I hope to get one after the beginning of the year but lately have seen some deals on collapsible stocks and flashhiders and such

No it does not.  Just like possesion of a 14.5" barrel without an extended FH is not intent to make a SBR.  It can be used for lawful purposes if properly modified.  The only hard fast rules are NOT EVEN ONE full auto part in a semi AR and you cant have ALL the parts for a full auto and you cant drill the hole in the reciever for the auto sear trip.

You can have a single full auto part though.  I just sent a full auto carrier to Kurt to have it milled to semi specs.  I also have a 14.5" barrel on the way.  

That's what I was hoping.  There is a guy in town here who is about to be sentenced for having an AR-15, an M-16 tri burst kit, and a how-to manual.  Hadn't done it, but I guess the intent was there.  Just wanted to make sure the other things didn't fall into the same category.