Thunderbird’s New Home
I mentioned this in another thread... but Mozilla/Thunderbird (not MZLA) should really concentrate more on feature-rich support.  Specifically better calendar and provider integration.Second to this, they should probably work on their own first class mail and calendar server as at least open core, and probably as SaaS as well.  As much as I like some of the mail hosts out there, for some, the ability to self-host is big.  The various pieces and software you have to cobble together are cumbersome, and even then, you don't get anything close to what Exchange+Outlook gives you.It would be nice to see Thunderbird fill this space, it used to be what I would consider a best of breed email & newsgroup client, now, I'm not sure I would say anything close to that.