Currently, the user must know about whether or not they need sponsorship for a package and whether it applies to main or universe.
Ideally, requestsync should guess this automatically based on environment variables such as DEBEMAIL or EMAIL:
* if someone's address ends with @ubuntu.com or @canonical.com, they most probably don't need sponsorship, so don't play with the switches at all.
* If their address ends with anything BUT these, they most probably DO need sponsorship, so the -s switch will be auto-enabled.
Likewise, if someone needs sponsorship, it implies that the bug should NOT be marked as Confirmed automatically in the syn request message's body.
The above would be very useful if a helpful Debian developer or frequent bug reporter spotted a new Debian version that might fix some Ubuntu bugs and wanted to inform Ubuntu developers of this fact by suggesting a sync.
PS: it is already understood that Ubuntu members also include non-developers. However, one would assume that all Ubuntu members already know about the Ubuntu procedures a lot better than any random well-meaning user or Debian contributor who simply wants to report a newer version of a package by using a tool that gathers all the relevant supporting info for them.