Riot keep wanting to push the champion towards the AP playstyle despite it being the boringest playstyle ever.
For what it’s worth I view it this way:
AD bruiser has usually been the stronger playstyle.
Despite that, AP has been substantially more popular. The most recent buffs to AP Shyvana were to get her to engage with the rest of the kit, like Q autos. I don’t think they’ve buffed the E ratio in forever. It seems like they’re still interested in AP being slightly weaker but also with more gameplay.