Studio has never really provided any value for finding and using previous projects.  We do have a customer field, and this can be used to filter since 2021 but not searched.  Now we have Trados Live, and this product has "hijacked" the customer field forcing users to base their structure on a "customer" because of the links to quotes etc. in some versions of Language Cloud.  It also adds these customers into the Studio list.

For some users it's more appropriate to use the customer field for other things such as domain, but now that starts to look a little non-sensical because of Trados Live being developed independently of what we have done in Studio.  I think a really good idea would be to allow the user to add more meta data to their projects so they can search for, group, filter on whatever they like.  Preferably we would make it possible to add and use however many fields we wanted.