Like this idea from 4 years ago, we need the ability to have multiple gridtabs for a record. We're definitely limited in what we can do with just a single gridtab.
For example, we have a workspace of projects. I'm currently using the gridtab to list out all the associated charge numbers available for the project.
Now I want to have another gridtab that I can aggregate up the hours entered from a time sheet workspace. I can't do this with a single gridtab.