There is actually a built-in 'tool' that could help with this situation. Though I like the idea of displaying the Task limit on the proxy/repo page as a more convenient way to remind one of the actual setting.
From elevated CMD prompt or Powershell on the Veeam Server from this path:
C:\Program Files\Veeam\Backup and Replication\Backup> .\Veeam.Backup.Manager.exe -Showproxyusages
This is a "live" Task Count. Updated with the press of any key, ESC to exit. This is a useful tool that Support uses for the same reasons detailed in the Feature Request. Hopefully this helps