There are many ways to use the KN7000. All of us think our way is best because it fits our style. But, here are some things I think about.

I agree that it was wise to selectively save stuff with older keyboards like the KN5000 because it took so long to load a file from floppy. In those days I would do most anything to avoid loading from disk any more than I had to. In my opinion, though, when you are using the SD card there is so little time to be gained by not saving all the default stuff it isn't worth the difference in time. Try saving a song setup with only the sound files, composer, the current memory, and default panel memories A, B, and C. Load that file and see how much time it takes. Next save the entire default list including the Sequencer, Performance Pads, and Effect Memory. Then load that file and compare the amount of time it takes with the file that has just some of the stuff. There will be less than two seconds difference. Are those two seconds worth the risks of selectively saving like we used to do with older keyboards?

Assume that you have loaded one of Larry or Bill's nice song sequences and after playing that song, you want to load one of your song setups that was selectively saved and did not include the sequencer file. Since you did not load a replacement sequencer file, Larry or Bill's sequence is still in the sequencer and you may well find yourself trying to play one song while a different song is playing in the sequencer. The moral is "Always load a blank sequencer file with each song setup". This clears the sequencer of any left over stuff.

The same can happen with sound or effect memory. When you don't include those options with the save, you will have whatever happens to be there when you load the next song setup. You may well end up with a voice that has digital effects applied that you didn't want, because you left those things the way they happened to be the last time you loaded that file.

These are just some things to think about. I prefer to save and load the entire default list of things. It is much safer and it takes almost no additional time.

In my opinion, there is nothing to be gained by saving all the panel memories instead of just banks A, B, and C. When you save all the panel memories, there is a noticeable increase in save and load time. Loading a song setup from SD card that contains all the default stuff including PM banks A, B, and C takes less than 5 seconds and is just as fast as trying to use the old method of incrementing PM banks to find the bank that contains a setup suitable for your song.