I don't know that it will necessarily "fail" or not either, but time will tell more on that. It is still very early in the line, so we'll have to see. I will say, that this may be the most I've seen "new" figures hang out on the pegs for a new line in quite some time though - at least for the most part. Sure, Fett (and in some cases Dack, etc.) disappear quicker - but I've seen decent numbers of both the ESB and ROTS waves at retail. There will always be some that hang around for each wave, but I can remember a time when you would barely know if a new wave hit because it would be snatched up so quickly. The first batches of "vintage" figures (VOTC/VTSC) in particular seemed to fly off the pegs, at least initially, even at the higher prices.
I'll agree though, although I really liked the ESB wave - and the figures in the ROTS wave are nicely done as well - they maybe weren't the most exciting. The ROTJ wave looks to be the best so far, and the one I'm really anticipating as well. I do hope the line does well though. I've said it before, but really if we got a good (well planned out) 2-3 year run of TVC, I think they could handle most to all of the needed resculpts and some fan requested figures that haven't been done as well. Time will tell. The combination of very well done figures and the spiffy packaging makes this one of my favorite lines yet (or maybe overall favorite, next to the previous "vintage" incarnations). As mentioned, the huge gaps in releases doesn't help drive collector interest any either. I do sort of wonder - aside from collector/fans' kids - if kiddos really care about this line at all, but you never know.