Thanks for the inputs and info @Wendy and @dalepotter.
For the issue of multiple sign-ups, perhaps this can share the login with another product?
For the issue of confusion, perhaps so text indicating that this is specifically for reporting problems with another publisher's data? But I can also see how this could end up having a lot of crossover with e.g. suggestions to edits to the standard.
Taken together, maybe we just need a new theme on the iati discuss forum for this? The multiple accounts issue would be solved, and it would be easier to cross-reference other discussions?
I am more worried about establishing that there is a) demand, beyond me, @YohannaLoucheur, @markbrough, @Moqri and b) that there is some evidence that the issues identified might get fixed.......the list of outstanding issues suggests maybe not. Perhaps something to discuss at the TAG?