Hi,
Would be nice to toggle breakpoints on specific tasks. Actually this calls for a "debug" Ribbon tab, with the typical "play/pause/stop" and "step execute" (to just run 1 task and then break/pause) buttons - the "play" button could use a drop-down to run without conditions, to mimic the current contextual menu.
The "debug" tab could also include a watch window where you could monitor your variables' values as the tasks execute.
Being able to enter comments under each task would be great, too (they could show up as "bubbles", or "post-its" in the flow chart view).
Shortly put, integrating some development environment features would make VC even a better tool than it currently is.
Regards,