I'd like to suggest some improvementes in the Daily Planning function of doit.
1) The capacity used to evaluate the estimates is defined at system levele. It would be useful to modify it on daily basis.
2) The planning interface that allows to evaluate estimates vs capacity is available only for "Today" tasks. It would be useful to have it also on other days (e.g. tomorrow)
3) It would be useful to have a "Weekly Planning" interface having the same concept of the Daily Plannning one.