You know... I thought Hasbro Did a pretty good job with their Marvel Legends SDCC Exclusive set last year... in a 6 figure set, 4 were re-released afterwards, but with a different paint deco. Only two of the six figure set were not, and arguably they are the two least demanded characters. Of course if you really wanted those two then you might end up paying out the rear for them... but I thought it wasn't too bad of a way to give attendees something special as well as try to keep more casual fans happy. Also they made quite a few available online, which I was able to procure.
Back when DST did the TWOK figures, they were rolled out as SDCC exclusives, but the retailers had plenty for online customers, so I think more companies are trying to strike that balance.