Ok, first i like to thank you about knowing reason for K in applications names, reason for that is user knows is application Qt or GTK+...
And personally i really like KDE name style because it is more different than about "mediaplayer" "videoplayer" etc... Problem on windows style naming is when user has more than _one_ application installed, all gets same name. Or if few different users has few different applications, why those names should be same when applications aren't?
One my friend always blames Linux names, he thinks windows applications names are best what you can have, "windows mediaplayer" "winamp" "Microsoft Office (or Office or MS office)" etc, he says OpenOffice name is really stupid and it just should be "Office". He even blames AmaroK about it name, because it dont tell user it is music player.
And he's blacklist even goes to distros names, SUSE, Mandriva, Kubuntu, Ubuntu etc etc... I dont know why he likes name "Windows" so much and why it sounds so "professional" and KDE not?
In short way, i just hope that KDE will continue using K in applications names, there is _very good_ K-menu naming, like "AmaroK (Music Player)" or "Kaffeine (Multimedia Player)" what tells users easily what application does, just plain "Kaffeine" does not and "Multimedia player" dont tell user what application he is using.
Application name should always be very unique, it should be easy to say or remember but there should not be any other limit for it's name and all software names should _not_ be so similar.
More what effect feeling about applications "karma" about pro using, is look, like splash screen should be more like Photoshop and not like Digikam, not so much toy feeling. I really like Digikam and i dont know any better software for over 60 000 picture storing (not even windows side or macosx!) but only thing what i "hate" is splash and how it looks when showing software for other photographers....