[gloves]

I just happened to come across this thread and while not perfect, I wondered if this suggestion might help the OP.

Basically, you can press Alt key and double click on an action and that will open a new window with a focus on that action's project as well as its other associated actions and action groups.

I use this all the time when I am about to tick off an action and want a quick overview of anything else related to the project that might need my attention.

Hope this helps someone anyway. I always wished there was a way to make this a keyboard shortcut but based on what I've read this is the only way to do it.

[Dale]

This is just for informational sake as Alt/Option-Double-Click is a perfectly valid method and for most I would assume much less effort than what I am about to list.

I may be misunderstanding your desire for a keyboard shortcut, but I can essentially do the same as you describe by the following keyboard commands. Third-party utilities could offer you a way to make these into a single keyboard shortcut for your purposes.

1. Start with a selected task or select a task* (I presume we are speaking about being in Context mode)
2. Use 1st keyboard shortcut Command-Control-F to get focus on the project of selected task
3. Use 2nd keyboard shortcut Command-1 to switch to Project Mode and see all related tasks in that view

* To select a task via the keyboard:

1. Use keyboard shortcut Command-F to bring up find
2. Type the phrase of your task
3. Click Enter/Return to select the task in editing mode
4. Click ESC to exit editing mode
5. Proceed to step two above

OR

Just use Spotlight and type in the name of your project instead of doing everything I list in this post. When a project is selected in spotlight it opens in a new window showing all of the related tasks.

1. Command-Space opens Spotlight (or whatever keyboard shortcut you have assigned to this function)
2. Up/Down arrows select Spotlight results
3. After selecting the project, Enter/Return opens new OmniFocus window with the project selected

The caveat with using Spotlight is two-fold;

1. The result, as stated above, is only a selected project without focus on that project.
2. When you use it without OmniFocus running and you have multiple versions of OmniFocus on you Mac (e.g. OmniFocus 2 Beta). In this case Spotlight will open in the "OmniFocus" application; this means by default OmniFocus 2 Beta will open instead of OmniFocus 1 if neither application is running. The reason for this is when installing the OmniFocus Beta it renames the current OmniFocus 1 application to OmniFocus + "its version number" — for me this is OmniFocus 1.10.4 — and Spotlight opens OmniFocus documents in an application named OmniFocus.

Hope this helps.