Brand's AP ratios are criminally low. Something to think about when buffing him for mid.
All of his ratios got nerfed during his last remake which moved all his power into his passive 3 stack. This is why he's only good at support. Sure, the passive has an AP ratio but most of the damage is free % health damage.
Another problem is that his ult took the biggest hit and basically does 0 damage. It's only there to stack his passive. In teamfights Brand relies too much on all the positioning being just perfect to get 3stacks on multiple enemies because his damage is too low without doing that. It's too easy for the enemy team to avoid that unless Brand's team comp is a crazy wombo combo, but then you would have Orianna mid, not Brand.
So he needs higher AP ratios straight up.
There's also issues with the mechanics of his kit. Landing stuff is too hard in league of mobility. Every time I play him I feel like I'm working hard and everyone else is facerolling.