I think Sony would surely do well to reduce the PS3 from the current $599 US to $449. Also, I think that the timming of this reduction would be critical. The best time to do it would be the week that Heavenly Sword, Home and Warhwak come out...which also happens to be the timeframe for Halo3.
I think doing would create a huge surge in sales as people would not only have a significant price reduction but amazing software to go along with it (and more coming later in the year).
Agreed.
Though, I doubt Sony would want to do this at the same week Halo3 is launched. A week or so prior would be a good way to steal some thunder but Halo3 will be pretty significant regardless and I'm not sure if that would help Sony's cause more than hurt it.
As for the amazing software, Heavenly sword could move boxes... the others, not so much.
Honestly at this point I'm thinking a $400 60GB PS3 isn't out of the question. While this price is expensive, it is shown to be a pricepoint which consumers can accept (see xb360 sales the past 1.5 years).