People seem to be infatuated with putting logos on coins, with crypto-currency,
and since NXT isn't just a coin, perhaps just
not including it on one in branding could help.
Yeah! NXT is the future, its image shouldn't have to resemble those of cryptocurrencies that came before it.
How about this as a catchphrase for NXT: "The future is already here."
That's taken from this post by BCNext:
https://bitcointalk.org/index.php?topic=303898.msg3438612#msg3438612