I don't think NY will figure it out unless they come ready for the street fight the Pacers, Bulls, and even the Nets will bring. Miami would be the same way except they do have a little nastiness to them plus all world talent on the wing and back court with LBJ, and Wade. Also these upcomers in the East are nothing to be nice with either, Washington has a very nice young squad who at any time this season could put it together like the Thunder did in mid 2010 when we saw them rise up as the power we know now (yeah that felt dirty), also the same could go for Toronto.
Nets brought some toughness in when they brought in Garnett and signed Andrei Kirilenko, that team is built to claim "we run NY" and to go at the Heat, I think age will be their down fall though.
Detroit is rebuilding, but their front court has the potential to rival the Memphis front court with Drummond and Monroe, I'm interested in watching how that team develops.