I think with this amount of landmass in a mostly pangeatic formation would lead to different climate patterns than expected. For instance I don't think those tradewinds would be so straight forward. I think the mountains and dryness would have a large effect, and create eddies etc. If you look at this map you'll see the wind is quite affected even at higher altitudes, even by our "normal" sized mountains With such large landmass there is no doubt that there are land formations of significantly greater size in the guild world.

Here are my completely uneducated suppositions about the wind off the top of my head:
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