I don't consider these issues to be trival (otherwise I wouldn't take the time and trouble to report then).
They go to making the tool natural and easy to use,
through consistency, use of common and conventional UI metaphors, the "
principle of least surprise" - ie it does what you expect it to do,
there is ease of use (ie keep clicks, data entry, to a minimum, menus and options can be found easily, help is in context and explanatory, defaults are sensible, and actions do not have side effects).
Of course in a complex tool like EA we are not looking for lowest common demonimator, it is a complex and powerful tool,
but we can and should expect a well thought out user interaction (and especially so in a tool that is all about objects {does it eat its own dog food?}) that leads us to the result we want,
rather than frustrates untils we learn the 'tricks'.
In other work each UI inteaction should be given the same scrutiny and discussion as implementation of a facet of UML.