There was no reason for wave 1 to be all repacks/rereleases, they should have limited these waves to 2 new figures/1 rerelease and evenly packed them at 4x per case. With 1/3 of the case using pre-existing molds that should have kept the cost per wave down.
Yes, there was a reason. SALES.
Hasbro has notoriously double dipped with character offerings in the action figure line during movie years. I distinctly remember seeing this in 1999, 2002 and 2005 where a crap version of Obi-Wan, or Qui-Gon or Anakin would be in the initial offerings, and 3 or 6 months down the line a much better version would be offered. So the onus is on us as collectors who remember what has come before to recognize this pattern.
Wave 2 of The Black Series offered up the SA renditions of Kylo Ren and the First Order Stormtrooper. When did those start showing up, November? That's a considerable amount of time since Force Friday back in September. And what were among the hottest figures in the TFA 5 POA line? Why, Kylo Ren and the First Order Stormtrooper! They don't announce it that way because then consumers might wise up to the scheme. I kind of saw this coming and vowed to NOT buy the 5 POA versions of Kylo Ren, the Stormtrooper, Finn, Poe and Rey. But that collecting/buying impulse is strong, and even though I knew things would play out like this I bought the 5 POA versions of these characters before I was able to get a hold of the WalMart SA versions. But had the WalMart Black Series new offering been out in October? Then I probably could have held out.
As for the first wave of reissues? Darth Vader, Chewbacca and Luke are evergreen core characters. They continue to sell through, albeit at a slower pace than the new characters. Vader is the face of the franchise. Luke proved to be the McGuffin of the new movie and had an all new allure as a character since everyone has been asking the JJ Abrams inspired question, "Where is Luke Skywalker?" And Chewbacca is in THE FORCE AWAKENS, so there was a tie-in for him to sell. Another reason for this first wave? It was a placeholder. It was supposed to secure pegspace in the WalMart planogram for this line until the new figures could be offered. But it seems likely that Hasbro and WalMart wanted the general line in place for at least 6 weeks following Force Friday before they launched the second wave so that they wouldn't hurt sales of the 5 POA versions of Kylo Ren and the FO Stormtrooper.