My only quibble with the FAQ is the last answer doesn't include one of your more common refrains. So, here's one more for the end:
* But what's wrong with scaling things to 8' tall avatars? As long as the scale is consistent, what's the difference?
An 8' tall avatar is 1/3 taller than a 6' avatar. Don't forget that when talking about land, everything is squared. That 1/3 linear difference when squared scales out to a 6' avatar having almost twice as much space on a 512 plot as an 8' avatar would. Instead of just a house, you can have a house, an outbuilding, a garden, and a boat dock. Given the price of land in SL, using a 6' avatar puts money in your pocket.