It's great for Topps and Dave, profit wise, at least for the moment. But it seems to be an unhealthy direction for the series. It seems this series is going to get even less exposure than the first one because of the sketch cards.
I share your concern, but I'm not convinced just yet. The sketch cards have taken the main stage for a lot of folks, but I think myself, and a lot of other people, are more excited to crack the packs and see the stickers.
I think you made a great point earlier about the possible shine coming off the sketch-card craze, with 5,000 new sketch cards being released with this series. Maybe not, but I think there could be shift away from what we've been seeing, as far as the secondary prices these will command.
Of course, if the full run of boxes sells out in record time when the normal sale period starts, it might be time to take another look at things. But, if the remaining 4,000 boxes last as long as series one boxes did or longer (was that a couple of months?), I don't think there should be cause for concern. My prediction is that these will last as long as series one did. Yeah, there will be the people investing a lot, with the strategy of parting out what they open, but I suspect the majority of people will be end-level collectors.
The cool thing is, even if people lose interest in sketch cards entirely, and Topps remains happy with keeping this product in their shop for a up to a year - the series remains in good shape, too. At the price we're paying, even without turning profits for sketches - these are a good value.
But again, IF those 4,000 remaining boxes sell out in a week or less... that would be surprising, and maybe not definitive, but certainly indicative of the unhealthy direction you're talking about.