I worded it weirdly. It has what it needs already I think, but I'm saying: if it can reliably and efficiently do all the most useful functions of ZFS, while being built-in to Linux, and not starting off terribly bloated, that will be fantastic.

Going by the most recent Phoronix benchmarks it still needs a fair bit of optimization work. Of course, I'm glad that Kent is focusing on squashing bugs and polishing the architecture first.