Looks very much like the current car...no surprise, since Toyota is about THE most conservative car manufacturer on the planet.
You are right, the current car doesn't handle and can't be "upgraded" to handle with the aftermarket parts that are available. Think of it as a slightly narrower, 2 door Camry Solara...though it's actually built on the platform of a different Euro market 4 door sedan.
So it's more powerful? Big deal, look at most of the current Toyotas, in particular the Scions xa and xd...both got more powerful engines their last re-style, but both got SIGNIFICANTLY HEAVIER, too, so the added power isn't really felt all that much.