Now he's working on… Aim For Love
Why? When Microsoft bought Rare from Nintendo, it put the developer to work on a prequel to Perfect Dark; the result, as we all know, was a mess. The company was given a few more chances to make big, AAA games in Viva Piñata and Banjo-Kazooie: Nuts & Bolts, but neither were successful enough to prevent Rare's inevitable transition from FPS mega studio to developer of miscellaneous casual games. According to ex-Rare employees, sequels to Perfect Dark were occasionally pitched to Microsoft with hopes of rebooting, rebranding, and saving Joanna Dark--but they were all slashed down in favor of games like Kinect Sports Rivals.
And director Martin Hollis? His most recent project is an experimental indie matchmaking game called Aim For Love, which aims to match real couples together. So… no, he won't be contributing, should it ever happen. As for the rest of the team? A few years before Microsoft bought Rare, several key Goldeneye/Perfect Dark staff left to form Free Radical Design. They created PD's spiritual successor in the form of the TimeSplitters series, but that itself has now stalled since Free Radical was bought by Crytek and rebranded Crytek UK in 2009.