What are your thoughts about what guitar solos in what songs are iconic and should be played note for note?
General response: Bringing some elements that are fresh and in the moment to every performance is an essential aspect of American Popular Music. If a musician wants to play challenging music by recitation, I would suggest looking at playing Classical Music. There are multiple lifetimes of challenges in that part of the art.
My comment above regarding performance of Popular Music does NOT mean that the musician should not learn the original material NFN. To the contrary, the well prepared musician needs to thoroughly study and digest the original material. In the bass world, Brown Eyed Girl and Mustang Sally stand as excellent examples of overplayed material, which many players never deign to actually learn the the original part; instead choosing to denigrate the piece, and then perform it poorly when called upon.
Instead, even overplayed material should always be fresh drawing from the original part and other sources to create appropriate presentation for the particular performance. One of the great strengths of popular material is that nothing is overplayed, because something should always be new, while retaining sufficient and appropriate elements of the original reference. Oil + water. The art is in resolving the immiscibility.
For guitar work, refer to Jimmy Page's live performances of "iconic" pieces. Or Muddy Waters. Etc.
It's "easy" to recite most Pop material. The hard part is giving due respect while making something fresh.
Of course, if you are touring with the Eagles, then your job might be to recite precisely what they want. I hope I never have a gig like that.
My $0.019. YMMV