Round table

It seems like nothing is taken into account...

It's the same randomness as with the appearance of new heroes in the tavern or new weeks... It just makes sense to sometimes not rush to take any available dwellings if it doesn't slow down the pace... take the best dwelling later, build a portal, and then decide which dwellings you don't need to take at all... in this case, it's not obvious, but if there was, for example, a Hydra dwelling, then you could not take the Gnoll dwelling at all.