missing BK architectures?

At OLS I got a number of requests for a PARISC BK release. ... Anyway, kudos to the HP guys aside, are there other architectures for which someone wants a Linux port of BK? I know we need to release a zseries version, that's in the works (noone is donating a zseries and I'm pretty sure we couldn't afford the power bill anyway, but I have an account on their public server), but what about other archs? Are we missing any you care about?