Hey jhc,
If I'm reading it right your adding an A note.
I think that's a E7sus4.
Here's a few other Bobby shapes I hear.
He'll move the open D and open G(add5) up and down the neck and often won't voice the 3rd. At times even over a minor chord without voicing the flat 3rd. Just the 1st and the 5th.
For lovelight,
E------5---12-----------
B--5---5---12--10-------
G--4---2---9---9--------
D--2---2---9---7--------
A--2-----------7--------
E-----------------------
For Scarlet,
---E-----B
E--12----------------------------
B--12---12-----------------------
G--9----11-----------------------
D--9----9------------------------
A-------9------------------------
E--------------------------------
End jam of Looks Like Rain, not so much like above, more like E's are wild. This one is just my interpretation.
----E----Dsus2--A----F#m7
E---0-----0-----0----0--------------------------
B---5-----5-----5----5--------------------------
G---4-----7-----6----6---------------------------
D---6-----7-----7----4----------------------------
A---7-----------0----4-------------------------
E---------------------------------------------
Bobby's chord changes are often very subtle as he'll change very little to bring about a smoother transition with a more continuous flow. The Scarlet change above is a good example.
He may even limit this change further like this,
-----E-----B
E-------------------
B----12---12--------
G----9----11--------
D----9----9---------
A-------------------
E-------------------
With only one note changed the B and D strings hold the continuity while the G string exhibits the chord change.
The E form voices two 5ths and a 1st. The B voices two 1's and a 5th. Something to ponder.
Bill