Thanks, @Jarek. They are both certainly have their “pros and cons” but are in need of some attention. Here is a link to a page with details about Large Project Organization in Rhinoceros
There are 50 or so feature requests on YouTrack are being sorted through and scheduled.
We are hoping that both Worksessions and Linked block can be morphed into “one” file collaboration feature in a future Rhino. I have no more details on this, except it is planned.
Sincerely,
Mary Ann Fugier