[Brian]

Marco, there is a way to do this, but the setting is app-wide rather than per-perspective; if you open the preferences in OmniFocus for Mac, then switch to the "Data" tab, unchecking the "In context mode: show projects and action groups" box will hide those items.

I'll check our development database for a request to make customize that preference in each perspective. I'll either attach your post to an existing request if I can find one, or create a new request for that feature. Thanks very much!