[quote=@Skepic]
Well then, I'm not gonna restart days after getting underway on top of two weeks to prepare. This world isn't even meant to be 1:1 scale or anything like that and frankly I'm not interested in that. I've been given a good suggestion to do away with population numbers anyway, since it doesn't really conform with the original idea behind this being narrative focused to begin with. I'm still thinking about it, to be fair, but that's the general direction this is going. This isn't about number crunching, its about telling incredible stories in a world we build together, with neat nations that we've come up with. 
[@Dinh AaronMk]
[/quote]

You shouldn't have to restart the RP to fix the mapping issues. Since really: what impact is that going to have on the writing, particularly at this stage? Even if you were to cut some of the larger down to quarter of their size they would still be immense nations. So if there was something important about the scale, that would still exist.

The alternative would be for some of these old empires to actually peel off territory as the RP goes on, not to players, but to NPCs named or otherwise so future players can pick up on them or building these new nations becomes a cooperative affair between the nation they peeled off of. Since the impression I get from the OP is a sort of post-colonial world:

[quote]For over ten years, darkness had enveloped the world. A sudden and massive eruption of a volcano in the northern hemisphere created an ash cloud that covered most of Othea. The world cooled and for those ten years, famine and internal strife became the norm. Empires shuddered or outright crumbled, governments collapsed, and in some cases, entire species were eradicated. 

From the ashes of the old world, now comes a new reshuffling of the world. New ideologies have taken hold of governments, backwater nations suddenly having the room to expand once more.[/quote]

But functionally the appearance of actually new nations, or the expansion of old smaller ones is prevented if there isn't at least going to be an emphasis for these old empires to regress backwards from their golden age pre-eruption and to impress upon them - as the GM - that they need to acknowledge this and the setting of the RP if they're not going to.