A truly innovative feature for ReSharper would be to interact with Sql Server in such a way that makes working with Stored Procedures far less cumbersome.
For instance, you might be able to edit a stored procedure in-line, or use a hotkey to auto-complete sproc names and parameters within your code. I'm not sure exactly how this would work, but I think you get the gist of what i'm getting at.
Unfortunately, all too many of us cannot use linq generated SQL, and must use stored procs due to company policy. Unfortunately, you have to switch to SSMS, or another project like a SSDT project, which makes the whole process more cumbersome.