Toodledo does a great job of helping me understand what to work on first. The "Hotlist" is wonderfully accurate. In fact, many times the hotlist is what I work from. Until I don't.
I usually have errands with a high priority and a due date of today or tomorrow that should not be on my radar while I am working.
There are other tasks that have dependencies that I mentally filter out.
All of this to say that it would be nice for me to be able to flag tasks as being on my "agenda" for the day. These are the tasks that I PLAN on performing during the course of today. There might be tasks due today, tomorrow and next week that are all many different priorities but they are the ones that, for whatever reason, I am choosing to work on today.
Then allow me to print the agenda (flagged tasks) in the booklet and filter for them on all of the different styles of web pages (slim, html, main site).