I am trying to count tasks open and closed we have for activating deals. Right now Rollup properties do not support the task object. They do support Calls but not Tasks (or emails).
Well I need that. I am trying to compensate with Workflows but the inability to Increase Record property values for Deals and make that a re-enrollment workflow is spoiling my good attemts and my hands are tied. It seems an easy feature to implement as this is already possible with other objects and Activities such as calls. So proposing to expand this to tasks too, it seems to me a basic feature to have for Rollups.