I hope people aren't making the mistake of casting Fire 3 just because it has a higher number than Fire 1. Its an honest mistake though but when you look at the numbers of mp, time casting, and damage, Fire 3 is only worth it during Firestarter procs and to get a full stack of Astral fire while in full stack of Umbral.

I like how they made all the spells have a purpose from 1 - 50 and still be used. Only issue is that the naming is a bit confusing... Fire 1 is single target, Fire 2 is less damage than Fire 1 and AOE, and Fire 3 is single target but doesn't replace the use of Fire 1 due to cast time and mp even though it does more damage. Think they could have worked out some better names.