If you add a Monk class
There is a thread for all suggestions to the class tree. My suggestions correspond to there being a monk class tree without being about direct changes to the skill tree itself.
My suggestion: quarterstaff and fist for melee weapons, throwing stones, knives, and stars for ranged weapons. Visually put their magic staff on their backs so they cast using two open hands to one side while taking a forward stance.
My inspirations:
Reading the suggestions others have made about the class.
One streamer specifically asked about a "Kamehameha" pose for charging spells.
My experience as a player of Dungeons and Dragons and former martial artist.
Additional note:
There is tactical advantage, in a practical sense, when someone uses silhouette of their body to hide what they are doing in combat from their intended target(s).