Been mucking around a bit more - Alpine make a "TuneIt" App for iPhone/Android, which connects to the headunit via BT and then allows you to, yes, tune it, through a GUI as opposed to the funky menu's.
Tuned up the Parametric EQ for 20 mins, and sounds even better.
Not got onto the time correction yet, but can also be done through the app.
Cheating a bit through the app, i know - but I think this is the way forward.
Everyone's "tunes" are fully shareable so you can upload them all to the cloud.