Honestly, when I'm playing a PC MMO, i hate the mouse more than anything. Point and click to move is ridiculous (which I'm glad FFXIV isn't like that) and needing the mouse to interact with objects such as NPCs is just too much when it's so easy to target them with tab, enter, or the arrow keys. However, I do agree with the OP, being able to use the mouse to do minor things such as /tell a player who appeared in your chat log, invite a player, and link item information would definitely help the UI, even in a small way, especially since player names can be much longer in this game than in other MMOs. And maybe on the PS3 version keep the same concept, but have a button that will maybe trigger a cursor in the log window, or will trigger a mouse that you can scroll across the screen with one of the analog sticks. (I personally like the first idea better, but just putting in multiple options for what to do.)