As a career Caster, here's a playstyle option I'd like to see for the double-dipped Mage, ArchWizard.
Give players the ability to NOT equip a wand in exchange for massive damage!
No unnecessary spammy filler wand attacks, just massive damage burst, then we must rest.
Make us spec into the Passive tree somewhere to unlock it, give us increased cooldowns and Mana cost if you have to - but give us the option to be a glass cannon like the days of old!
Below are a few examples of Glass Cannons at work, comment below on what you'd like to see for ArchWizard!
Blackmage from Final Fantasy XI
https://www.youtube.com/watch?v=KRnneZSZqBA
Megumin from KonoSuba!
https://www.youtube.com/watch?v=uXjr05MqH2g