if we did end up partnering with MTT-S again, does anyone have any suggestions for what you would want to see?
MW101 is great as-is, I've been visiting it now for at least 1.5 decades (eek!). If it changed, I would mainly want to see more of the type and style of content that's already here. Something like more depth on existing topics, more examples/tutorials/case studies, more downloadable spreadsheets and calculators, or more topics covered.

Would the "approved by MTT-S" stamp make you trust our content morre?
Not really... errors can happen in any publication. MW101 is self-correcting over time with reader-submitted corrections. Going through an MTT-S review process just sounds like a way to spend a lot of time accomplishing not very much.

Should we dial back the non-sequiturs, humor and politics?
I hope not! I enjoy the informal nature of this website.

I don't think there's a good rule of thumb since there are always multiple factors defining maximum ratings, and the manufacturer might rate some things very conservatively due to testing/model limitations or because for business reasons it was not a priority to find out the true limits.

But I'd definitely worry about exceeding internal voltage limits for small low-voltage devices that are often used in LNAs, than I would worry about thermal limitations.

My university library had that book, do you have any nearby universities you can try? Some uni libraries will let you join as a non-student/faculty for an annual fee. You can search across many libraries with https://www.worldcat.org/

There will always be harmonics since transistors/diodes are nonlinear, the only question is how much. I don't know if I've seen harmonic content specified frequently for switches, but IP3 and IP2 often are.

Harmonic level in dBc for CW signal should be proportional to IM level in dBc for a 2-tone signal if the standard textbook cubic polynomial model applies, which it often does well below compression.

Since IP2,3 of a switch are usually pretty high (higher than a comparable amplifier) it's probably safe to say that the harmonic content of a switch is usually pretty small.

This is all theoretical, I haven't checked experimentally.