I installed pretendo yesterday,
All looks good (showing miiplaza messages...).
I tried MK8 yesterday and that worked fine but since i updated MK8 it still won't connect to the mk8 online seevers anymore.
i also installed other games like...
Cruisn on the Wii is one of my personal examples of that, it's considered one of the worst games of all time, I loved it and completed it several times.