Seeing that Rockstar changed the p def on sigils, I'll do more testing to see the initial impact. Depending on results, I think reverting the cast speed would be a good idea. This was never about destroying mages, but about bringing them more inline with the rest of the classes for harmony. So...
Nah, fix the mages, tired of having 8k p atk and hitting a mage for 1.2k with no arcane armor but hitting leather armor (zerkers or rogue) and hvy (gladi / titans) for 4k. It makes no sense.
Rockstar you've created an environment where everything other than mages are pointless to play. I've done crazy amounts of testing across various characters with full gear. Mages take less damage than tanks. Hit harder than daggers (daggers are damn near pointless). Mana potions need a 10 second...