It would actually be great to be able to give simple commands to the elemental, that alters the ai.
"Asault", just attack, don't cast.
"Take it easy", DoT spells/Enfeebs.
"F**k sh*t up", Go all out nukes.
"Retreat", don't do anything.

The way Elementals are acting right now is rarely useful, and only thing they're used for 90% of the time is Elemental Siphon. Would be great to be able to make them more useful.