I can give you loads of information about politics. Give me one second though, kind of tied. This post may only be half complete when I submit it.
We want something that's a dystopia. They're usually more interesting. Victorian politics were a little different than today's. Imperialism was a huge deal especially. How do you make that into a mech RP? I'm not quite sure. Never really seen it done. I think Code Geass sort of does it though.
If you don't like that, we can make something up. I'm kind of rewatching G Gundam, actually, and the idea of nations dukeing it out for a territory in an international contest ever few years (kind of like the Olympics) does kind of have a draw to me ATM. Mech Olympics? Is that a useful idea?
I'll submit some links in my next post. I studied this era very thoroughly when I was in highschool because there was this book I wanted to write that was Steampunk. Also, trains would be interesting for this RP, even if they're not historically accurate. You won't believe how much fast transportation changed everything in the industrial world. That's something we can look into if we're having mechs.
I'll probably submit more details in my next post. I have other forums I need to jump to first. In the meantime:
The Victorian Web: An Overview
I don't know if this is just me, but I find this interesting. A secret brotherhood. Never really researched it that thoroughly though:
Pre-Raphaelites: An Introduction
It's the Pre-Raphaelite Brotherhood. You guys don't have to read this all, and I'll probably distill stuff anyway when I get to this later for easier consumption.
If you're familiar with Superheroes (or at least know about them) the rise of the idea of costume fighters started around this era with characters like the Scarlet Pimpernel. Penny Dreadfuls, which are pulp books of the era, had characters like Spring-heeled jack. The idea of vigilantism alongisde some kind of territorial tournaments, if that's what you guys wanna do, might be interesting. The Scarlet Pimpernel is this character who rescued aristocrats during the French Revolution.
Feel free to bounce things around while I'm checking stuff out.