Last Chaos has some good features and some decent graphics.
I personally found the grind a bit repetitive but that is just me personally.
A few things I didn't like about it, were that they didn't have all classes male/female, they were all single gender classes.
PvP mechanics needed a fair bit of work and there was no mini-games or other PvP features which I found disappointing
It has an item mall as an option to buy premium items which can enhance your gameplay greatly, it has no monthly fee though.
But don't let us make up your opinion about whether to play it or not. Just go try it and then make up your own mind !