1) Each airline already has 'oneworld coordinators' but the actual number of staff hired by oneworld alliance itself is very small compared to Star Alliance.

2) I highly doubt that a oneworld joint lounge will happen any time soon at one of the major OW hubs. For HKG, CX would much rather have its own lounge that it can control in terms of quality (own CX staff) as a premium carrier and can expand without prior consent of the other OW members in a joint lounge scenario.