Quick thought from raiding tonight. Personal Loot needs an 'Any Specialization' option.
Right now, you can choose 'Current Specialization' or pick a specific specialization. But at this point in farming, an 'Any' option would be really nice. If you're a Holy Paladin, you might get a Ret weapon, or a Prot trinket, without giving up the chance to get a Warforged Holy item.
The other option is basically switching loot specializations on all the different bosses, which is rather fiddly. As well, it's unfortunate when one specific boss has items from different specs, and you have choose which spec to forego.
Perhaps a small change, but I think it would make Personal Loot a bit better.