Bone Mage too high of investment for too little return

I've tried to play Bone Build with Crit and Power Charges to later go into Blood Mage but I don't think I'll reach that point as I've realized it's just not fun to play.

Most importantly Bonestorm feels bugged. Maybe it isn't but the damage output is extremely lackluster for a channeling skill. I pay the the price of having to channel to skillshot and most times the bones fly straight through enemies, dealing little to no damage. Furthermore bosses like Zalmarath or the Snake Queen in Keth sometimes do not take any damage from Bonestorm at all. If this is intended then it's badly visualized. And that becomes very frustrating when you take the risk of channeling an extra half a second but get zero reward.

Furthermore I assumed Bone Blast is a good "auto-attack" skill to compensate for steady damage but it's atrociously awful. I have to aim a minuscule area blast that the enemy hopefully lands on for it to deal a fraction of an enemy's HP? Other skills like Chaos Bolt immediately land the hit, are free to cast and deal the same damage. Why am I being punished for trying to use a more skillful ability?

I've resorted to using Elemental Skills now as the Occult skills seemingly lack any AoE skills, despite your frequent usage of "this boss's mechanic is that enemies swarm trap you" and now I'm wondering "Why did I take Witch at all if I am pushed towards elemental skills anyway? Should've played Sorceress from the get go".
I'd use minions to support me but they perish when the bosses look at them. And due to the visuals of the game I am not able to distinguish between my minions and the enemies. I often times find myself Bone Cage-ing and dodgerolling away from my skeleton archer because he suddenly pops up behind a pillar.

Ultimately I had to ask myself "Am I having fun? Or am I waiting for the fun to begin?" and came to the conclusion that currently playing what I wanted to play, what would make me want to play your game, is not in the game (yet). But I have invested about 15 hours into this character now and it's a frustrating thought to have to restart because of poor design choices (or unoptimized skills and items).