Dave, thank you for sharing!
I think people are misled a bit by the title of the topic it is
not Quality over
Quantity It is Quality over
Variety Let me put it differently: a book with 10 short stories, or same volume book with single story...
For me, I enjoy writing short pieces as it leaves me more time to write other things - a variety.
And the second part of the topic in my view is this:
Lets say I have 50 songs that are roughly 1:30 minutes each. Basic Intro, Chorus, Verse, Break, Chorus, Verse, Ending. Enough to get the feel of the song, story line etc.
I know I can make them more... how to put it... a standard length song by adding longer complex intro, bridge, outro and ending. The problem is, I am not an instrumentalist and adding something dumb and un-interesting stuff, that I can play myself would make whole tune suck.
So my idea is that one day, if I find talented accompanist, pick a dozen tunes and record some cool instrumental parts to make them more interesting (
quality 
).