I just got home from a really wonderful session -- there are so many tunes!
Anyhow, the elbow-to-elbow crowded space made me more aware of how much space I'm taking up with multiple boxes. I had my D one-row and three-row GCF. There were two other accordionists who had multiple boxes. A mandolin player and a banjo player also each had a melodeon. At any given time, there were 3 to 5 boxes on the floor.
Then there are fiddlers, who of course manage to play every tune that comes up with just one instrument. So at times like this, I envy the simplicity.
It would be nice if there was a handy three-row melodeon that "switched" keys -- with one set of reeds (single voice) in A/D/G and one set in G/C/F. Single voice bass with bass fifths (instead of chords) that also switched. Compact size. Dark wood so as not to frighten the fiddlers.
This would not be an accordion to suit all needs. But it would fill a gap, and it would solve the problem of too many instruments on the floor.
Alternatively, I could take up the fiddle.