Here's a pointless theory question that you've reminded me of:

To make a G major chord, for example, you need G,B, and D notes in some combination, but several inversions are possible (i.e., on a guitar you can either play an open B string or make it a D). So what if you had an instrument with twelve strings, let's say, and you played it with 10 B notes (the lowest note being a B), one G note, and one D note. Could you call the resulting chord a G? Technically it seems to fit the definition, but it wouldn't sound much like a G...

And as long as I'm on pointlessness, here's a pointless terminology question:

If your tune is in the key of D major, what do you call the D major chord? I call it the "one chord", but that sounds kind of Nashville; what do they call it at composers' conferences in Vienna?

Marion