Well, brown dwarfs are not good choices for life-bearing planets. Since they run on deuterium or even helium fusion, their lifespan is *much* shorter than most stars.

Add in the fact that their output changes a *lot* over their lifespan (so the already narrow Goldilocks zone *moves* much more than its width) and the conditions for life get even less suitable.

I'm doing a lot of handwaving with theories put forth about perturbations in the system moving the planet closer to the star as the star cooled, and other even weirder ideas.

And I'm planning on the indigenous lifeforms being very primitive (middle to late Devonian). That gives the humans pretty much free reign on the land.

Oh yeah, because of it being a brown dwarf, the planet's year is something like six-and-a-half *days*. Which means any Coriolus effects will be more pronounced, but still nothing like Earth's.

I'm considering a number of ideas for climate moderation. Higher water to land ratio, or the land being more broken up. Strategic placement of bodies of water, etc.

Heck hills or mountain ranges might direct the flow of weather to a greater extent.