Gil/Gold Spammers - Yeah.. this needs to be addressed like.. asap. Putting someone on the blacklist is a MASSIVE pain in the ass, I simply refuse to accept NOBODY thought of this prior to launch. Allow me to provide an example.

WoW - Spammer spams. I click name, hit Report Spam. Game instantly adds player to ignore list, and reports the offender to the GM's

FFXIV - Spammer Spams. I press a key on keyboard to open friends list, I click blacklist tab, I click add player, I type out the very amusingly spelled name (Counting 13 lowercase L's is always fun!) then click add. Then I open ANOTHER menu, make a bunch more clicks, and can FINALLY report the player.

The UI in general. This is hands down my biggest complaint. I have not seen a UI this overly complicated, clunky and downright non-player friendly since... well.. maybe Anarchy Online, if ever. The whole thing is an absolute disorganized mess of epic proportions.