At one point in discord, Leandro said that the original tool they were using to upload Sentinel+ files never got updated, because once they had the character database it became irrelevant. He implied that it would worked on depending on the status of the character database. I would love to see a standalone CoH server package that included the option to turn on or off Sentinel+ uploads, so every server could decide how it handles them.
It's worth noting that you can extract costumes from Sentinel+ files here: https://cit.cohtitan.com/senticon/index.php (it's a bit of a process, and the person who created the utilities is now working to improve the process).
Sentinel+ is available here: https://cit.cohtitan.com/sentinelplus/ (t's not needed anymore, but there it is)
It was named after Sentinel, which is what City Info Tracker used to pull badge info (and Mids builds) when the game was live: https://cit.cohtitan.com/sentinel/