For God's sake. I don't care a dime about fancy UIs. I mean, I really, really, really don't care. I want a robust and reliable system that doesn't change all the time for no good reason. I want a worthy Outlook alternative. Outlook is much more than just an email client. Kontact, Evolution and Thunderbird+Lightning just aren't good enough (they're simply full of bugs and I've tried all 3 of them). Why waste all those manhours in useless ice candy and not improve those instead?