It is interesting to hear your comments about Ryanair and Denmark as earlier this year my sister in law and husband were coming to Edinburgh for a family wedding. They live in Copenhagen. I told them to check EasyJet for fares to EDI to which I was told - oh no we are not flying with THAT airline, they have a dreadful name here. I was puzzled as EasyJet have such a good name here in the UK. Anyway it turned out they thought I was talking about Ryanair! Well they flew EasyJet and were well pleased and in fact they were over again last month and again flew EasyJet, preferring them to Norwegian who they have used in the past.
So -if Ryanair do set up shop in Copenhagen it might be a fair task to overcome some negative thinking about them. Maybe not- I expect Ryanair will have done their homework.