I think Ronny has clearly communicated on discuss.nubits.com how the settlements work with users who lost money. You can argue about whether that should be Twittered around, but a statement on the CCEDK website that settlements have been achieved and that payments are underway would be nice but not a showstopper to list them on NuBits.com.
At this stage we have to assume that Ronny follows up on his settlements in the same way as BTER does. In both cases we don’t know for sure whether that will happen but there is a clear intention by CCEDK which has just been confirmed again.
So I think either BTER should be removed or CCEDK should be added if we apply the same rules. And again I think it is worth to add a statement that NuBits doesn’t endorse any of the exchanges and that users do need to do their own due diligence when trading of keeping coins on an exchange e.g. by reading our forums. The current information in this forum is more than adequate for every user to assess whether they accept the risk.
BTW I would support someone defining a full list of verifiable criteria when an exchange should be listed or not, but I’m not sure whether that is feasible without many disclaimers and/or third party involvement.