From your most recent note… how is this different than having a signing extension just trust and remember your preference to trust a client entirely? the ux is only demoed this way because I want want to be used to approving each request by hand. And most want evidence this granularity is possible. if you wanted to say I trust x client fully, you can. it would feel no different if it had a delegated key, you set it up once and you logged in already each time you revisit. I like to demo all the new clients, this way lets me do that and not think about it later, can just forget about it. I also like to look at what I’m putting my signature on, as application specific data can change or increase, over time.