http://io9.gizmodo.com/neither-charlie- ... 1784270139Charlie Hunnam not returning for the sequel.
... which reminds me: when I watched PacRim 2 I wondered if Raleigh could even pilot a Jaeger anymore. After the events at the beginning of the film his left arm (his left side?) is shot, so he's in the opposite spot in the cockpit for the rest of the film, then largely the same thing happens to him when his (the Jeager's) arm is ripped off in the final fight.
Anyway, I feel Raleigh's story is pretty well wrapped up at the end of the first movie. I'm more concerned with Mako, the two scientists, and Hannibal Chau returning. I also would like Tendo back. Herc Hanson might have left the Jeager program after the death of his son, but he did seem the one most likely to replace Pentecost.