No money seems fine to me. My only beef with that whole aspect is actually the failure to explore in any meaningful way the ramifications of a post-scarcity economy. We just get these rather smug hew-mons endlessly gassing on about how enlightened they are. Show, don't tell, I say.
Data shouldn't use contractions (OK I'm not sure that was Roddenberry himself).
'Klingon' is a really silly name.
The Traveler and Wesley's destiny with him.