In reply to blurty:
> The BBC undoubtedly develops a party line, that they think we should be fed for our own good (EG the BBC Trust held a seminar entitled ‘Climate Change - the Challenge to Broadcasting’, which shaped their reporting of Climate change in a particular way)
The agenda is online and seems a reasonable one to me. Wouldn't you expect the BBC to consider how to report on such major topics?
> So ByEek - I think there actually may be a committee of people in the BBC who plot stuff like that
Going from that to committees plotting political machinations is tin-foil that territory. Sure, a London focus and a self-referential group will tend to certain assumptions in reporting and the BBC may be guilty of this. But that is very different to deliberate plotting.
Regarding the OP, presidential-style debates don't really work, I think, when you have more than 3 significant parties likely to be elected. Maybe several election-focussed Question-time style events with various combinations of representatives would be better.