[whpalmer4]

Ever stop to consider that the ability to add attachments to the outline is also a competitive advantage, one which is potentially useful to all OmniOutliner users, not just those who have multiple devices and can't be bothered to move files by hand?

If you just want some barebones checklist maker with Dropbox sync, no doubt you can obtain a number of them already. If that's all you need, please go use one of those instead of insisting that Omni dumb down OmniOutliner by removing a feature it has had for the better part of a decade.