Star Wars Celebration had no exclusive figure... CII brought us the first-ever GL fig... And CIII, coming on the eve of Darth Vader's big "debut" movie, saw the release of an exclusive Vader fig.... What would you like to see for a 30TH anniversary con fig?
A tribute to the original
Star Wars? In what form? Something again focusing on Vader? Luke? Another Lucas...?

Here's my idea: Focus on father & son, Anakin & Luke Skywalker, not just the first film. A set featuring Anakin & Luke seeing each other for the first time, as depicted in the original
Return of the Jedi.
Retool Evolutions Vader with a head featuring the original Sebation Shaw make-up, eyebrows and all. Give him the sweet smile of an old man who's taken a long, dark road to finally find love for his son. Retool the right hand to 1) hold a saber and 2) remove to feature a peg sculpted/painted in the form of severed wires.
Take whatever superdeluxe mucho articulated ROJ Luke you're working on (or have completed) for the (V)TSC line, and sculpt a new head for it. Give Luke the sad look he has on seeing the condition of his broken father. Sculpt a little tear running down his cheek.
Now pack the two of 'em with Luke posed kneeling over dad, on a base with a 30TH anniversary logo and whatever name they decide on for the con ("Star Wars 30TH Anniversary Celebration"?).
What would you like to get from the event.....?
P.S.
SW 30TH in L.A.?