Dude, your being too analitical about it.
No matter what you do, creativity isn't measured by these standards or questions.
You just do it cause you feel like it. No matter what it is.
We have a saying here....
"If can....CAN."
"If no can....I can!"
JonBro
"How I Do It, Go":
I turn on Onion Skinning, draw two to four frames or so, and add inbetweens for the FBF-ness. I only tween things that wouldn't look better FBF'd.
redminus
Agreed, as a rule I try to tween as little as possible too, unless working on the movments of inanimate objects or pans... sometimes you get screwed for time though, but for the most part I totally find character animations that are overly or obviously tweened to be pretty tacky-looking