@JeffPerry I've also seen stuff fall through the cracks with OmniFocus, but for me this partly a self-discipline in keeping the Perspective or Flags (or your view of choice) relevant to what you're working on.
I've also used OF2 in conjunction with the Fantastical calendar app, where dragging a task of 30minute duration into Fantastical will create a 30minute slot.
Finally, I'm also looking forward to OmniFocus 3 when it ships later this year, especially multiple Tags (not a single Context) and improved reminders.