Make it an external service then, and leave the thing that's already working great to just be.
The reason authors like and use arxiv is that it gives 1) a timestamp, 2) a standardized citable ID, and 3) stable hosting of the pdf. And readers like the no-nonsense single click download of the pdf and a barebones consistent website look.
All else is a side show.
You have to keep in mind that an increasing portion of their time and labor is going towards moderation and filtering due to a mass influx of nonsensical AI generated papers, non-academic numerology-tier hackery, and other useless drivel.
Spinning the service off forces other the labor out onto other universities rather than leaving them to solely Cornell