Many countries of the former Soviet Bloc built entire neighbourhoods from prefab concrete slabs -- I'm sure you're familiar with the awfully drab aesthetic these brought.

The construction of these was relatively straightforward though, and (especially important in apartment buildings), the solid concrete walls have great soundproofing qualities.

With a bit more expense, these buildings could've been made to look more attractive, and have more variety in terms of floor plans. I've been following some of the building automation trends, and the pre-fab components approach seems to best balance the many concerns.