Here is a (very!) rough prototype scribble of the possible formation of landmasses about the Half-Continent, a fair part of the southern lands of the Harthe Alle (snazzed up a bit with fancy computer trickery). This is still an ongoing exploration for me, which keeps things fun.
The pallid areas are landmasses, the orange to glaucous the oceans (the colour shift representing climactic/temperature change = north hotter as you approach the 'equator', cooler the further south you wend). The solid red mass is the Half-Continent as revealed to you in the Monster-Blood Tattoo books and on the map site. The names in parenthesis are largely old even forgotten appellations for the regions at the time of the Phlegms.
Given the size of the Half-Continent already, I think this would make the whole 'planet' rather large indeed. I believe that though our earth is the optimal calibration for life, a much larger globe is theoretically possible, and even if it weren't, it is now.
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