Gokai 39 released And for your pleasure, a recount of what the MegaRanger members have been up to over the yaers:
MegaRed, Ooshiba Hayato is still acting. He's cameoed in Hurricaneger and Den-O, and of course, Gokaiger
MegaBlack really didn't continue acting beyond MegaRangers
MegaPink Higashiyama Mami looks like she's still acting too. I'm sure her best cameo was Takaoka's mom in Boukenger
I don't recognize most stuff that MegaSilver has been in. But he was Tatsuya's dad in Rescue Fire 37:
Matsukaze Masaya or MegaBlue is probably the best known now. He became a voice actor and was the voice of Mikami Teru in Death Note. He was the voice of Kaoru's dad in Shinkenger.
Tanaka Eri or MegaYellow hasn't been in much recently either. But she was a cop in Kuuga and Natsuki's mom in Boukenger