@Applejack007
We’ve been doing that for nearly every bg/side-character.
By your logic Derpy is still nothing more than an animation fuck-up that got lucky, Octavia is just a cellist that does nothing else, Thunderlane is just some random Pegasus, and Bulk Biceps is just a muscular idiot.
Hell, look at Vinyl Scratch, she’s basically a female Flash Sentry:
Has no character aside from being a mute DJ.
Has close connections with one of the mane cast.
Has a cool car that can also transform.
Pretty much almost the same aspects that Flash has, yet everyone loves her.
Heck Diamond Tiara and Silver Spoon were stereotypical rich snobby schoolyard bullies, and they both got fixed in the span of one episode even though they basically insulted a handicapped pony.
If that can be done to those characters then Flash Sentry isn’t the lost cause, the problem is that the haters just want him to be one.
As I said, “Don’t see something for just what it is, try and see it for what it could be.”
Even the blankest of canvases can be made into something magnificent if we take the time to do so. Heck, many people outright hated the idea of bringing back MLP because of G3…
…and now look at what MLP has become.