My complaint is that none of the so called NG systems are worth calling NG, there really is no generation gap between them and OS3.x, everything is essencially still the same. I wish at least one of "NG" options would have guts to move on and create a modern alternative, but it seems that noone is interested.
I could say the same about Windows NT4 and all the windows after it. Or About the various opensource unix clones. Or about the first and the latest OSX version...