Blizzard blocked looking at over players ilvl though there API there broke a lot of addons.

Or though i added a workaround in jamba to show the ilvl off the chars on the display team (next the the player level) not really what your asking.

there is many addons out that gear your chars for you.

as for loot i use Personal loot as it gives the most gear and will only give you items you can use as i done need mail/leather in my group. (i need to add Personal loot to jamba group settings as well)