Alot of us have been waiting for Mtobolzco's rear sway bar but he is still working on it. I'll be one of the first in line when he does get them on the market.
The pressure I run is a little hard on rough pavement and 225/45/17 tires but the handling more than makes up for it.
I've run around 45/42 on the stock rims on the wife's svx down to about 42/38 and it handles much better and still doesn't pound bad with the squishy 55's.
You'll find the tires will wear much more evenly with the pressure higher than subaru recommends. I ruined a few sets of tires at the stock pressures before experimenting with higher pressure. I got 25k out of my last set of azenis sports at the higher pressure with no cupping.