Honestly, if you don't have the Momaw Nadon yet, I suggest nabbing it. It's a good figure, and quite superior to the first. When you put the 2 together (Old and Saga Catina set) in the Cantina, they make a neat, and different duo.
The Greedo's different enough too, that it, the POTF2, and Commtech ones all look "unique" together...
The Ponda's not a notch lower either, but he's the weakest of the 3. His legs are "odd", to say t he least.
I agree though, the 2nd set would sell better than the first, hands down... I'd buy 2 of each if they were available, just for the customizing parts I could cast off all 3 figures. Evazan and Wuher were vast improvements on their previous figures IMO.