To use some of the things that already exist or have been worked on by others, I'd suggest we add two or three new continents, perhaps the one of Ryccia's colonisation RP (although it perhaps needs a bit more detail and the non-canon RP should be kept non-canon for now) and I think, you played around with creating a potential new continent too, right Qwert?

As for implementing those new continents in canon rp:
I suggest the new continents exist and they can be part of historic rp mainly.
Let's make the way free for historic rp or at least historic worldbuilding with colonisation periods from around 1490-1940.
I can imagine Ryccia's and/or Qwert's continent having a limited amount of plots (maybe the Seraph-fantasy-rp-continent too) and active rp-ing nations could take a maximum of one plot on each of the extra continents for their colonial history (I don't think, this would be a problem. 20 or 30 plots max per continent should be enough considering how many active rp-ers we got - not too much, but enough for 20-30 plots).
The new independent nations won't get rp-ed by anyone, they are just known by the rest of the world that they exist and maybe give some possibilities for trade or stuff like that.

To summarise: Basically the idea is that canon present-day rp is still limited to our main continent, but that we can use the other continents' plots for historic colonial canon rp (between ~1490-1940) and possibly trade (for modern time rp). The nations of the other continents won't get rp-ed though, they "just exist".

The colonial rp Ryccia once started should still be non-canon as it was set in our modern day timeline, but I wouldn't have something against adding his lands to the map, if he allows to do so.