I had a quick scoot through the season and it seems that there is a pattern of limiting the number of cast each episode by losing 2 or 3 in rotation. I think that:
- they topped their budget, expected more budget to be forthcoming, and didn't get it or
- they were in budget, but other costs took them over
- they were in budget, but casting Giamatti took that over (Giamatti across 3 episodes is about $2mil and guest cast are $20K per episode, younger main are $30-35k, and Tigs and Odeds are $100k = 70 less guest cast slots)
- they were in budget, but rewrote ad hoc to include a more expensive player such as Oded for one episode more, which knocked 3-4 guest cast out
I know little of these dark arts but I assume each guest or recurring brings knock-on hair, costume, make-up, craft services etc costs.
I know that's not new, but was not as noticeable in pre-Kurtzman Trek. Other than the absence of Leeta and Rom from WYLB.