I don't know about real life implications, but it seemed like such a cliché or a cop out in-story. I can see why Alicorn!Twilight has its appeal in fanfiction, but you see it once, and that's enough. It really does feel like a Disney ending cliché, or something.

I really would prefer a very powerful Twilight as a unicorn than as an Alicorn. It feels more special that way.