Ranked in these QuestionsQuestion Ranking
Cons
Con Original Nexuiz is better
It's free, it has more content, more players, better performance, better netcode, it's open source, cross-platform compatible, free-er modding/mapping capabilities, and the list goes on.
Con No playerbase
According to SteamDB data the game, since February 2016, hasn't reached even 20 concurrent players.