I didn't even want them to remove the Line-In jack on their MacBook Pro line... but that's more due to me being an amateur stickler with a shoe-string budget and the most basic gear.
Recordings I do are from pre-amped guitars DI into my 2012 MBP and recorded through Logic. For keyboards I tend to use USB MIDI with AUs. People who are a little more professional tend to use external DACs anyway, so it's probably way overdue for me to step up my game and get some new gear (if I ever end up upgrading to a newer MBP).
In all honesty, they'll eventually end up dropping the headphone jack. There'll be a bit of a fuss and then people will stop caring. I don't think it's as big a deal on the Pro line as people are making it out to be.
Recordings I do are from pre-amped guitars DI into my 2012 MBP and recorded through Logic. For keyboards I tend to use USB MIDI with AUs. People who are a little more professional tend to use external DACs anyway, so it's probably way overdue for me to step up my game and get some new gear (if I ever end up upgrading to a newer MBP).
In all honesty, they'll eventually end up dropping the headphone jack. There'll be a bit of a fuss and then people will stop caring. I don't think it's as big a deal on the Pro line as people are making it out to be.