Gonna be tough to make the Knicks "cool" again without having competent players, though, haha.
As for their current brand, I don't mind it at all. I could do without the silver in their uniforms, but they're nice otherwise. Their City unis have been well-designed, but they just don't get publicity because, again, the players in them are awful (or injured, in Porzingis' case). I will say that next season's City uni does NOT look promising from what I've seen, lol. It won't matter, though, because they won't be getting any marquee players to wear it.
Also, give me this guy (with some obvious clean-up) as an alternate logo, in the vein of Philly's Big Ben: