[Leonardo]

According to David Allen this is a future project to be put into Someday/Maybe.

Key to GTD is your review process.
You review your Someday/Maybe projects on a periodic basis, for instance weekly.

In OmniFocus you could create your project and define it "On Hold".
Now it is in your trusted system and out of your way.
Then you create a repeating action:
review my "On Holds" and set a date/time/context for your review process.
Now the reminder to review is also in your trusted system and out of your way
- until it is time to act on it.

The beauty of OmniFocus is the ability to define your project as a subproject
or inside the folder it is belonging to and to hide it until - upon review -
you mark it active and then have it in the right place without any further ado
like moving around inside hierarchies or copying from external files.

Keep things simple and effective.