As we work on larger and larger projects, using Worksessions has become the norm.
Each designer on the project opens his .rws file which makes his own portion of the project active, while attaching the other parts for reference.
Apart from a few glitches with blocks (of course !) , worksessions are a great -and I suspect underutilized- feature in Rhino.
Yet, either in the “Recent” tab of the splashscreen, or in the lower part of the file menu, only recently opened .3dm files are listed.