A good friend of mine has seen a few of Hackett's solo tour dates in recent years, speaks highly of them. He does his own stuff, but has been doing 40th anniversary theme tours for each Genesis album of that age.
Back when I was in my late teens or thereabouts, and first listening to Genesis, the instrumentals and quieter stuff was of more interest to me. A lot of their stuff hasn't held up well at all. In the car right now I've got some obscurities like "Happy the Man" and "Stagnation" (some version of it that is).
My only experience of their live shows was the tour that supported the release of "Seconds Out", when the Bald Wonder was fronting. After Peter Gabriel left (and I found and still find his Genesis schtick tiresome) they became a self-tribute act, and haven't been quite what they were in terms of composition, IMHO.
Love "Stagnation", the whole Tresspass album is fantastic, and that was without Hackett and Collins, I also have some of the Ant Phillips solo albums. Phil even sings on a few songs on them.