So there is nip-26: Alice allows Bob to sign on her behalf with a barer token. If Bob shows the token, he can act on Alice' behalf.
* Alice can attach conditions to the token
* Alice currently can't revoke delegation
* Relay's have to be aware of the nip so Alice's followers find events published by Bob
* Clients have to be aware of the nip so that these extra events get shown as Alice's
And there is nip-46 which works a bit like nip-07: Alice signs events sent by Bob interactively.
* Alice has to be online
* Alice can apply arbitrary judgement as to which event to sign including "only 1 event per minute", "if dice role is > 4", "if .tags contains the agreed upon disclaimer", ...
* Relays and clients can be oblivious of this nip - others won't know that Bob was involved
For me, the lack of revocation, the increased complexity for all relays and clients and the bloat by including the barer token in every event make me strongly dislike nip-26.
Sadly nip-46 hot-key requirement is not cool neither.