the thing is that even for that use case, which is exactly the use case I had in mind when I started looking at it (https://nostrit.com could be done much more elegantly if NIP-26 was better).
I think having a proper key delegation where user of both keys are the same person definitely needs to be solved,
but NIP-26, or something like it, where you can give *some* permissions to a 3rd party without giving out the full reigns to the kingdom, would be valuable.