these are good points.. you should always take into consideration of your relative position as well as your absolute position. Relative position most often applies to the preflop raiser, and for one example, being in the SB facing a button raiser ABSOLUTELY SUCKS, because you have the worst relative position and the worst absolute position.

It can also apply to a huge maniac or something too. A lot of times you'll refer to the seat on a maniac's left as the jesus seat, but sometimes, depending on a lot of factors including player skill, it's better to have them on your left because you can just check everything to them and see how the rest of the field reacts before you make a decision. I guess it's just something to think about.