Ah yes, I forgot to take a proper look at this when I had it forwarded to me.
A couple of things that stood out for me (speaking in part for BPA/Bretonia) in the history. One was the start of the war with Gallia - this happened in 818, not 816 AS. As far as I know, martial law has not been declared on Leeds, and by now most of the planet has been evacuated to Cambridge and New London, waiting to go to Sprague, Gran Canaria or elsewhere. I would suggest you alter it to those unwilling to either leave their homes or fight for Leeds, or perhaps workers who have lost their jobs in the factories on Leeds. Possibly check out this.
Your comments on IMG and ALG don't really seem that based in fact - I believe they are generally considered some of the best corporations to work for. ALG is the fairest in Rheinland anyway, and IMG is based on the fact that BMM (and later Daumann/Kruger) mistreated their workers.
Overall it is an interesting idea and would be good with a couple of tweaks of the history. Cool RP, but (as can often be the case) with not too much to do in-game you might struggle to keep people playing Orbitals.