Akali's tower taking potential feels pretty bad.
Back then, Akali's ability to take towers was affected by her passive, iirc, making it much easier to take towers as you would deal tons of damage to it. Due to the passive change, she does not deal an strong amount of damage onto the turret should she ever be able to auto a tower.
Because of the necessary gunblade rush, you will have a mix of AD and AP bonuses. Since tower damage is calculated by either the higher of bonus AD or 50% AP , she deals less damage to towers per auto attack than your standard mage who rushes an item with more AP than Gunblade's 80 (examples include Morellonomicon or Ludens, at 100 AP each.)
Essentially, she deals less damage to towers with 1 item than your standard AP mage, which is harsh as she puts herself in more danger to autoattack a tower as she is in melee range as well as true vision.
Proposal: Make Akali's passive affect towers. Akali should be able to retain some of her former tower damaging potential, which ties in easily with her current passive.