I totally agree with your balance is an excuse for Fancy-Play-Syndrome.

However, it is good to balance a few things for OUR OWN GOOD.

1. balance our 3betting range
--Some would call this polarizing, either way I think of it as balancing because we're 3betting hands we aren't willing to stack-off with so easily postflop, making it more difficult to play against us.

2. balance our UTG/UTG+1 opening-range
--Again, it's important that there are hands in these ranges that make cold-calling against our opens -EV.

Now, in terms of balancing our flush draws with our sets, etc... I totally agree with you Ben. Like since when has anyone bet/3bet all-in with a FD at 50nl or lower and actually gotten a fold? Seriously, this line is so stupid, but people go, "well I would have done the same with a set". These people need to be beaten with a stick.

Take lines that have FE (i.e. c/'ring FD's against a wide-cbettor) with your draws and take lines that get value (i.e. b/3bet against a passive station) with your 2pr+ type hands.