Roger Mosey (and now Barbara Slater) are the actual sports editors at the BBC.
In many ways, this role is redundant really and I don't think a direct replacement is that justified.
That doesn't really work though as "editors" on television news are more about the actual output rather than strategy. Roger Mosey and Barbara Slater were both appointed Director of Sports, a managerial role. Roger Mosey has become head of 2012 planning...
He will oversee the corporation's sport and cultural plans for what will be the biggest event the UK has ever hosted - and the biggest ever BBC production.
...hardly the same role as Mihir Bowes had. Equally I highly doubt that Stephanie Flanders or Nick Robinson are actually in charge of the BBC's economical and political direction... even if they do have
The role of Sports/ Home/ Economics/ Business/ Politics editor at the BBC is more about reporting - being the senior person the beeb can call on when big stories break - and breaking big stories (through their many contacts and influence), as well as looking at the actual content that is going to make it to screen.
You don't really think Nick R gets to decide what direction the reporting will go over the next four years? Or how much reporting will be shown on BBC NC, BBC One, BBC Radio etc.?