Ochdx, I agree with most of what you said. I just don't think they can match the power of a V8 with a V6. There's really no replacement for displacement, except for force induction, which is very unlikely. The reason the NSX can pull that off is because of weight. The RL can't do that because with all its gadgets and sound proofing, the weight goes up. Even if you have 350HP, which is more than all the V8 in its class, if it doesn't have over 300ft-lb of TQ, it's really hard to make it feel fast.
I don't know how Acura can make the RL with options without ruining their phylosophy. All their cars come in 1 trim +/- Nav. If RL starts to have options, then why not just make TL and TSX with options too then. After all, the whole selling point of Acura is everything comes standard for a reasonable price.