i know I should probably do this with the keyboard instead, but I find reordering outlines in OmniFocus with the mouse really frustrating. I just gave up moving an item towards the bottom because I can’t get those little blue markers to align correctly. Instead I moved it up and then moved other items above it.
This is what I was trying to do:
And I wanted to move Cheese to the end of the list at the same level as Foo and Bar.
What about a little bit of automation? If you had two icons on your toolbar to Move to Top/Bottom, would that help? Take a look at this clever solution by @ptone on the old OF forum. It might be just what you’re looking for.
In any case, learning Keyboard Commands (check Help menu) is really a good thing to consider.
I have found that mousing left to right affects/directs the hierarchy in which something will land. So drag to the vertical position you want it in, then move left or right to decide what the parent of that item will be.
I had the same issues in OmniFocus 1. Since then I learned the keyboard shortcuts to move tasks around and I have to admit that it’s a lot faster: ^+⌥+↓ to move a task down in a list (on the same level).