Allow 'Show Menu Bar in Context Menu' to be 'filtered' to only certain Menu/Sub-Menu/etc

I can't believe I've never come across the 'Show Menu Bar in Context Menu' feature till just now; but I have been noticing/making use of a similar feature within JetBrains IDE's recently (alongside quick lists) and really enjoying it.

I haven't deeply played with the options in BetterTouchTool for this, so it might already be possible, but I was thinking it would be cool if I was able to use the 'Show Menu Bar in Context Menu' action, but 'filter' it to a certain menu/sub-menu (I'm not sure how well something like this would work universally.. maybe it just would show nothing if the current app didn't have that menu/sub-menu)

Basically, currently it shows a menu like this:

But perhaps I want to be able to open a 'focussed menu' on just the red part of this screenshot:

For example, in JetBrains WebStorm/similar, with a menu like this:

I can search for/trigger a menu item (eg. git):

And have just that menu item shown as a context menu:

Yet with the current BetterTouchTool feature, I can't focus specifically on that 'Git' menu:

I guess maybe 'Trigger Context Menu Item' and/or 'Trigger MenuBar Menu Item' might be able to be paired with this to tell it to select one of the sub-menus.

Or at the very least, the same syntax for that action could be used as the 'filter' for the sub-menu to select as per my feature request described above.