This is coming from someone who really loves it - I think you should wait.
The positive, the UI lag is so much better. My computer went from clunky movement, slow menus, and sometimes almost become non-responsive at parts for about 2 minutes to virtually no lag at all. Menus are fast, clean and great. Can have two chat menus, and overall, a huge step in the right direction.
There is one thing they did though, that has and could potentially, ruin this game for me if it doesn't get fixed. The SP change. Before, you tried to "proc" your SP points. Now, you get a set amount like XI per mob. Sounds better, right? Well, it is up to maybe about rank 20. My highest job is rank29 thaumaturge, and for the past 2days, I've tried to make the best of this SP at high levels. I can't anymore. The max I could earn is about 6-8k an hour. And doing what? Mindless killing tons of easy mobs for about 50~90sp a kill. Not fun, and I can't last doing it.
I was forced to kill weak mobs because unlike the low ranks, high ranks get about 150 for killing something that is considered hard/red. Mobs that could potentially one-shot you. So no, they aren't worth it by any means. I'm sure it will be corrected, or well, praying. Because I know I will not get to rank 50 getting 50~90sp a kill. It won't happen.