In this day and age of online collaboration, Webflow's collaboration setup is very expensive and often misjudged with the new digital collaboration works IMO.
Noticed this in Wix websites, I can give access to just the specific site for design collaboration. I am the owner of the site and it lives in my dashboard but the other Email holder gets an invite link to work on the website. They do not get access to any other site but that particular site only. Wix does not charge any additional amount as well for this feature AFAIK and it would be amazing to have this feature on Webflow.