[yeahforsureman]

I get the problem. Wouldn't say it applies equally to other outlets. RT is very specifically a single-state propaganda tube, while a lot of Western press could perhaps be characterized as vaguely Atlanticist and pretty pro-globalization. But I'm not sure whether this was what you meant exactly by power centers.

Would they need more categories, then? Like geo-political orientation and state influence (although the latter would often be close to the press freedom rating)?

[pydry]

I meant more like the democratic party (new york times), republican party (fox), the national security establishment (washington post).

This is still too vague even, I think and there are probably complex sub-centres of power (e.g. factions within the democrats) and alliances (e.g. the neocon/democratic party nexus) reflected as well.

All of this gets airbrushed over by the traditional left/right continuum.

It's critically important too, coz it definitely drives both what is reported and how it's selectively presented and is a better predictor than an arbitary left/right designation.