I agree with a lot of what you said.

My opinion is that if you play 4 tables or less and concentrate on every decision (even if you think its the most obvious/trivial spot in the world!) then you're bound to improve a LOT faster than someone who's 14 tabling.

There's a reason why a lot of players who play higher stakes tell people to have the "learners" mentality rather than the "grinders" mentality.

Obviously you still need to put in volume, but the first priority should be improvement.