I agree, this is a GREAT game, but i'll be leaving at the end of my free month because of 2 reasons, the bad interface, and the limited chat window. The bad interface has been discussed here, and i have used a PS2 controller, and it helps the game tremendously... until you group, and actually need to communicate with your group or linkshell often. Having to put aside my controller everytime i wanted to type something blows.
Second is the chat window. 8 lines of text is just not enough. You should be able to have multiple windows, with each window having a specific filter. When i'm in a group, and i'm a maintank, i can't see what the hell is going on in the text window because i just get so much spam. Spam from my attack, spam from me being attacked, spam from others calling Renkei chains, spam from others provoking, spam from healers as they call out heals, and spam from chat and linkshell.
Another issue i want to add to the interface is the targetting, which is just a pain in the ***. I don't know how i'm suppose to do this, but if i'm a Paladin and tanking something, and i need to toss a heal on a party member, it's not as easy as just targetting and casting a cure. I've read some advice on specific macros and such, but even they don't seem to work 100% of the time.
As a console game, i suppose this game and the interface would be the best out there... but i didn't buy this expecting this to be a console game. How difficult could it be to fit a interface more specific for a PC?