I would suggest offering individual accounts.
I have now used Refworks at 2 different institutions in 2 different states for over a decade. I love it and it is all I have ever used. I do worry, though, about losing access to thousands of references if the institution I am currently accessing it through decides to go with a different platform or vendor.
My institution has also unsubscribed. And I unfortunately have a big problem. I am used to using this tool. I have no influence at my university. I have encouraged colleagues to use Refworks, even ProQuest used my texts to promote their product. I want to use Refworks, but I don't know how to access it now.