You guys are missing the point entirely and it's a concern.
I'm a professional and have been for more than 30 years, I also have outboard gear such as an Eventide H8000 & H9000 along with Lexicon racks etc. I could very easily hook these up to the KPA as some have suggested like Metronomes and apps etc ...
The request is to make the KPA a stand alone fully integrated musician's 'tool'. This means the one KPA does as much as it can to assist the musician.
The KPA is not a stand alone amp and it's not a stand alone effects rack, it's an integrated musician's tool. This is the world today.
A metronome is a far more deeper training tool than drum loops etc, professionals use metronomes and not drum loops.
Formal music training/learning is always done with a metronome and again, not a drum loop.
If you don't want it, stay out of the tread and leave our request for CK to determine its validity.
In fact, do us all a GREAT favour and delete your posts as not to pollute our request. I don't come into your threads and denounce your requests.