Sauron grind has one weakness: condition discard. Even pipes and hobbit hospital cannot heal the 8 wounds per turn from
UtWE and
Orc Bowmen. In fellowship block, the main ways to discard shadow conditions are
Secret Sentinels and Sleep, Charadhras, with Bilbo,
WSG as a distant third.
As a result, Ally hate is exceptionally important.
Tower Assassin is good, but
Memory of Many things is even better (if it were a shadow event, not maneuver, I would even estimate Sauron grind to be a top tier shadow). This will obliterate elf allies, as well as Bilbo and Barliman Butterbur (often used as an extra Sleep).
Another tack I have used quite successfully is to add Ulaire Cantea on top of Enquea and a few
Relentless Charge. It can work wonders against the horde of Last Alliance decks out there. Cantea is also pretty good at denying double moves-useful as it gives you longer to fish for all your power conditions.