What do you mean by next bitcoin protocol? I really doubt that any coin/platform can do better than bitcoin(wide adoption already here, big players onboard)
I am personally impressed by NXT from technical perspective - lots of features, written from scratch, great community...the problem is - it never show a sign of wide adoption, the devs are pushing and pushing for new features but they never do enough for PR and marketing ...maybe it's too late now?
We want to know if NXT is the new bitcoin protocol!