Loving it...
There are problems but no game gets released without them.
Crafting needs some serious love, right not too many crafts are imbalanced in the market place because of "End Game" concerns. And Crafting is expensive. Biggest issue at the moment is you can get gear at lvl 50 that surpasses what can be crafted with the exception of Bio-chem items, but the top tier Bio-chem items require you to have Bio-chem to use. It's killing crafters, they are great while leveling up, but once you hit lvl 50 there just isn't a place for them in your life anymore.
Credits...well you hit a spot in the mid 20's where it seems like you just can't get enough to handle what you need for skill training, crafting etc. Once you get around lvl 30 though that issue dissolves, I've got a lvl 33 Sith Warrior on Grandmaster Zym, and while I don't know if it will become an issue again, right now I rake in 20k credits fairly quickly.
Mobs come in 3 types, Weak, Strong, and Elite. Weak enemies are just that, but you need to think about how you tackle the Strong an Elites, sometimes this is a huge upset though. There are alot of places you run into 2 Strongs or a Strong and an Elite close enough together if you don't tackle them the right way you get curb stomped. During Beta Strong and Elite's were way underpowered, you could breeze through them, they got a bit over-tuned, but further patching is helping that a bit.