I’m so disappointed with Outlook on Mac after years of outlook on PC. When will it get better?

I have been using Outlook on Windows since at least 1998 (15 years!!). It's always been an essential productivity tool for my work.   It's is THE app that is always open and it's unique in how it powerfully combines calendar, email, tasks, etc.    I recently moved to Outlook for Mac 2011.  What a HUGE disappointment.  Outlook on Mac is perhaps only 60-70% of what it is on windows.  The spam filter doesnt work (they couldn't confirmed no fix at the Microsoft store) and there are dozens and dozens of very small missing features or very annoying ones (like inability to turn off familiar name display for emails).  Outlook on Mac is now a huge productivity drain.   It is hard to express my huge disappointment in Microsoft, Gates, Balmer and crew.  Does anyone care about loyal (or formerly loyal) Outlook power users??  Microsoft you make it VERY hard to stay a loyal customer.  I can't find any information on the web that suggest this there are upcoming releases in Outlook on Mac to make it better.   Are their?  can anyone tell me why I should continue to use Outlook on Mac?  I can't imagine that Mac Mail is any worse.....

signed a very, very disappointed microsoft customer.