personally, i would prefer that the videogame, as well as MWO, be treated like the old video games and the cartoon. as fictionalized accounts of events. which frankly, fits well, because it lets you minimize the setting breaking aspects, like having so many mechs in a remote part of the periphery, and some of the oddities (like the Argo and its many illegal or outright impossible features)
the reason i think this should be applied to MWO as well is so that we don't have to shoehorn the "hero mechs' into regular BT.. when said mechs often play merry hell with the technology progression and availability if they are 100% canon. i mean, you have characters from the 3rd succession war running around in hyper customized machines packing XL's, Ferrofib, DHS, and pulse lasers. and they've been branching out into inventing their own mechs, which don't exist in Catalyst's game.
if these are treated as in setting fiction the way the Batletech Cartoon was, such digressions actually make sense.. the Aurigan Reach can be a small periphery realm.. but there was a holovid made loosely based on a political dispute there that threw out accuracy for drama. the MWO hero mech stuff becomes just part of the immortal warrior series or similar, where such over the top machines actually fit, since the technology involved in that show is only loosely based on BT's reality (unless BT actually has 'photon swords" in the succession wars ;) ) and the characters are larger than life.
this way you can preserve the better aspects of the video game's setting, while also not having to do mental gymnastics to fit those things that just don't work with the immense amounts of stuff we already have.