I don't worry so much about the habitat limit. At level 30, the limit is 31 habitats. I have no idea where I should put 31 as long as I want to have any big ones. I have 24 habitats and will buy a 25th tomorrow but then all the space will be used again
but I guess when they release new expansions (no matter when that is, they are at least working on it), they will eventually also update the level system and allow more levels and thus more habitats. anything else wouldn't make much sense.