Hopefully this is something that a small cab file can handle or will be found in future releases, but allowing the user to show Tasks on their homescreen w/o 3rd party software and extending the view of the Calendar panel beyond 1 day is something MS can support.
I've found a few hack plugins for the Tasks, but they are a little shakey and I ended up turning them off.
If Windows Mobile had it's own little homescreen editor (like CHome Configurator) that would be a HUGE bonus to the software and allow users an easier path the customizing their experience. I wouldn't be mad if you made an addon to WMDC to configure the homescreen, that would be amazing!