I wonder if SE will even let player addons have access to monster data. I HIGHLY doubt it. I believe the only data player made addon will be able to access are direct info that you client currently holds onto. Monsters that have enimty towards you, target-able items in range (player, monsters, objects), current macros, ext. Anything bound to the "server", monster actions, monster movements, ext will be unlikely to be used for addons. Just my two cents.