Agree this is a sound solution for now however the the ISS is currently only approved for service until 2024 (this will clearly be extended) and plans need to be made for its replacement.

With the (moderately) high probability that the SpaceX Star Ship will succeed and go into active service in the next few years the cost to orbit is going to drop significantly. There is an opitunity soon to rethink what a space station is. Realistically the internal area of a Star Ship could make a space station in the same vain as ISS, and would be “cheap”. But we could also feasibly construct a rotating station with the use of Star Ship.

Space is about to undergo a transformative change in how people approach building in it.