It makes sense to take things slower when it comes to twilight's character arc the second time around with the return of Faust. because i feel like there was still A lot to explore Before she was crowned princess, but if twilight were to become an alicorn around the second time it should be way later in the plot. because by then we could have flushed all the reasons she would gain wings aside from succeeding Celestia but since she was originally meant to rule along side Queen Celestia. I would personally like to see the journey twilight would take after becoming a princess to gain her wings .
But we won't know till the show starts up again.