I'm fearing that this will just end up being a repeat of PC1 where many of the theme sets didn't include all the same pieces. One would THINK that they used a style book of some kind that included a check list of all the different pieces needed and then design the full sets for each theme.
Instead it seems like one person made a bunch of pieces, then moved on to something else, and never returned to fill out all the pieces in that theme.
Sadly, even when someone went through and documents what was in each theme, showing the pieces that were missing, Frontier never bothered to go back and add them. With that track record, and the over-all incomplete status of PC2 when released, I'm not convinced that any of this will be corrected