(Another edit: I think I'm going to need to adjust the shape of the coast, so it looks less… …exactly round? Also make proper deltas for the rivers, now that I know where the major ones are.)
(Edit: turns out I screwed up the scale calculations, lmao. It's not that lopsided in terms of scale, but height is larger than width at this latitude; this is basically 43°S at the extreme north, and 57°S at the extreme south, on a planet with √3× the radius of Earth.)
If you're familiar with the Köppen classifications, this place is mostly Cfb, with some Cfa right north of there, Csb on the extreme north, Dwb in the east, and Dwd in the far east. So, climates as diverse as Cape Town, Atlanta, Paris, Vladivostok, and An Extremely Specific Place In The Far North Of Yakutia.
I'm putting more focus on this area, because it's where a language that later (due to Not Posting Spoilers On Line Babey) became a lingua franca in this corner of the planet originated? So I guess now, I need to come up with various types of flora and fauna, and determine what minerals would vaguely make sense here based on the plate tectonics, and all that.
(The plan: basically one proto-proto-language feeding into one proto-language, with loanwords from several other languages; two other proto-languages feeding in with more than just words; one resulting language; throw on a bit of mild linguistic shift between the language becoming That Specific Language and its state as of the 2Xth Century, when this culture met humans for the first time.)