Progressive rock lengthy suites in general while still enjoyable doesn't seem as mindblowing because of lack of classical style transitions between section and how those songs sound like medleys. It's hard to emphasise with the "progressive rock snobs" who look down on pop music for lack of complexity when their music lacks the motivic unity of traditional Germany classical compositoon
The short compact pop songs that emphasise on melodies are still enjoyable. 60's pop music is still great with it compact songwriting craft that focus on melodies. I saw Brian Wilson live post classical conversion and the music is just as enjoyable as it used to be.
While I don't expect pop music to be written in sonata form. I do expect pop music to have he "spirit of sonata form". Which is music that has a sense of dramatic arc to the song. Introduction, climax and resolution. Pop/rock music that achieves this are still enjoyable. Sure a development section would be better but a emotional climax with a guitar solo or a bridge of a pop song or a crescendo/build up is still great
I will say though that pop/rock music primary advantage over classical music is 2 things
A) vocal music - classical music has to used very specialised vocal techniques to project their voice over an orchestra hence there isn't much diversity in the timbre of th vocals. The invention of the microphone allow a highly individualised/personalised style of singing as you can just turn the volume up of the vocalist above the loud surrounding instruments. People with unique vocals and unique vocal styling are still quite enjoyable to listen to. Relistening to Morrissey eccentric creepy paedophile voice with his elaborate scat and melissma is just as much of a buzz and crack up as it used to be
B) electronic manipulation of timbre of instruments. Plug in a electric guitar to the amplifier. Then add some distorted crunch to the guitar tone still sounds as good as it used and still headbanging joy. The diverse sound and tones of the electric guitar is not something that is not replicated in classical music. I can't get the kick arse crunchy guitar tones, the dreamy ethereal digital delay of The Edge guitar playing or the phaser, Wah-wah and other guitar effects in orchestral music
I Guess the next evolution of classical music should be the incorporation of the microphone in the vocal music and the incorporation of effects and studio with classical music. It would be interesting for an opera that has a vocalist that sounds like Bob Dylan (who by the way is quite capable of hitting the notes) singing in it