Measuring unsagged makes much more sense to me.
As soon as I read a geometry chart of a sagged bike my brain automatically converts the fork lenght to compensate. Ie. 160 @ 25% = 120 and it’s a PITA if I’m honest.
While riding, sag is not a static measurement (or even an accurate average measurement) and I don’t run anywhere near 25% sag so I have to work with static unsagged numbers before the rest makes sense.
Would you measure full sus geometry sagged too?
That would be a massive headache for me as I run around 15-20% sag front and 35-45% rear but know what static geometry I like/suits me.