Centrally Manage Drop Down Lists for Multiple Sheets

I work with a small Real Estate company and we lean heavily on Smartsheet for all of our task and workflow management. We have built a system of task lists, workflows, and meeting agendas that all work very well, but at the moment we have to edit drop-down lists manually sheet-by-sheet. I've searched the community for ways to centrally manage our drop-down lists, and I'm seeing questions about this that date back as far as three years.

This is really important functionality for us and I'm really hoping someone can tell me if we can hope to see this added to Smartsheet in the near future. All of the work-arounds I've found so far unfortunately don't work for us.

If you're unable to create a drop-down list management tool, it could solve the issue if we were able to insert cross-sheet references within a drop-down list. That way, I could create a Drop-Down List Sheet where each column is a drop-down list and each drop down list would refer to that sheet. Hopefully that makes sense...

Does anyone else have any work-arounds I may not have found yet?

Thank you!