We have been discussing the issue regarding support for specifying storage locations at length and shared our response in the comment below:
To further our progress on the discussion, we have put together our syntax proposal for explicit storage locations for the implementation here:
Proposal for Explicit Storage Layout Syntax
Note that we wish to make progress on this due to EIP-7702. With that being said, this is not final and we are open to feedback that could potentially help us consider alternatives or make necessary improvements to our proposal. If you would like to contribute, feel free to go through our proposal and share your inputs under this post or the original issue.