Ken, now don't take it personally
You have a reasonable point about folks who consistently set up table with private sales. Isn't that skirting the law about being a FFL? So is the BATFE the appropriate avenue of complaint?
If an individual has a large collection and does a one-time table - is that a problem? Sometimes I see tables that are mixed - dealer guns and a side section of private guns (sometimes those are weird - like a whole tray of private SW 638oids with black frames and SS cylinders). What's up with that?
I was at a show and saw some guy trying to sell a snubbie SW 66 and being bamboozled by the dealer. If I could have levitated over, it would have been a great private sale.