I bet, because the vOTC figures are so awesome, that we never see them again.
I said it before and I'll say it again: I really think this is a one-shot deal. That's why I'm not taking any chances and buying my second set to open now.
I would have to imagine that in the future, it will be cheaper for the Big H to crank out the 15th version of Cantina Han, PotJ Ben, Mechanic Chewie, et al instead of going back to run more of these vOTC figures.
When you think about it, the "regular" figures must be cheaper to make. Where is the incentive for Hasbro to recard vOTC R2-D2 with all those extra accessories/parts, when they can just crank out more PotJ sculpt R2? Same goes for almost all of the vOTC figures. There is a cheaper alternative ready to go.
You may say, "Yeah, but they already have the molds for vOTC figures so that should keep costs down since most of the cost of a figure is in tooling." That may be true, but it's even cheaper to use a less complicated existing mold. There are a lot fewer parts/joints involved in Mechanic Chewie than vOTC Chewie. Therefore, there is less cost associated with re-running a batch of Mechanic Chewie than vOTC Chewie.
So, that is why I think that Hasbro will take the easy road and keep cranking out PotJ Ben instead of ever re-releasing vOTC Ben or any of the others. If there is one thing I've learned from OTC, it's that the future of this line in non-movie years is to cheap out as much as possible.
Now, I could be wrong and eventually they will all get re-released after Ep3, but I really doubt it.