To me a “reissue” has to have had some kind of change. This could be artwork, barcode, new booklet added. More likely it is extra tracks or even totally remastered.
There needs to be something different - not just a reprint of the same disk.
As a collector I’d want to know if there was a difference worth nothing.
I don’t see that having any need of disambiguation text though. It should just get a new Release entry in the same Release group.
Look at Dark Side Of The Moon as an example:
66 different versions listed there… and I know there are many more. Some of these are remixed, repackaged, generally fiddled around with compared with the original. None of these get a (reissue). Though when that reissue actually has a specific sub-title \ anniversary then those details do get into the disambiguation.
This seems sensible to me.
Whatever decision is made we need the site help files updated to mirror it. I’m finding too many of these discussions are only in the form and the decisions are therefore lost to most users.