Taliyah is FAIRLY balanced but....
I can just feel a buff coming in. I can FEEL IT IN MY GUT. Dont get me wrong, shes not OP and shes not UP. Shes a utility mage with decent damage, and if youre a perfect human being, GREAT DAMAGE. But not even the pros can hit all the Q bolts all the time. Not even most of the time. Its hard to aim that. But she definitely has her uses and shes pretty decent. I feel fairly decent wont be enough though and shell get buffed to be a STRONG PICK, not an OP PICK, but a Strong One for sure.
Just my 2 cents.