Most jobs don't even come into anything resembling a full kit starting at thirty let alone higher like SMN for example which changes every threshold or MCH at post-60.

And regardless of what level it starts at, it won't incentivize people to read tooltips or get passable let alone good. It could start at 1 and you'll still get Viera Squall cosplayers who couldn't tank their way out of Sastasha unsynced.