Sigh ...
Was that really necesary? No need to make it personal again. -_-
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First, i dont really think this staff sucks in the first place ...
True, with level 5 its a trash item, since even our Cantrips hit harder.

But that is just fate of items that allows you to cast a spell ... once you overgrow them and move on.
Second, i think its important to realize its for spellcasters ...
Bcs no matter how many supercool and appealing items you have for meele classes, they are no use for your Wizard/Warlock/Sorcerer ... therefore comparing them seems quite pointless. o_O
Its like
A: "Sigh, robes sucks in this game."
B: "But there is this cool Heavy Armor!"
A: "M-hm ... and how does that affect me?"
Hint: It dont.Also ... i can imagine (when combined with some other items) that this staff can still be appealing, even on level 5!
Well, i cant really see that supposeed "big picture" you are talking about ...
You claim you want permanent effects, and items that allows you to cast spell ... this is item that allows you to cast spell and have permanent effect ... you dont like it anyway.
Maybe someone should double check his argument math? O_o