Out of curiosity I immediately built and tested a Sauron Fship block swarm deck. My deck turned out looking a lot like cw0rk's, but it still failed to do the job in a few test games. It wasn't consistent enough, and even though I managed to get between 9 - 12 minions out at site nine with careful planning, lack of wound prevention doomed it. I found that TL wasn't really the problem except vs choke, but /consistent/ drawing and wound prevention did me in almost every time. Plus the fact that enough of these minions are 5s (as opposed to Moria's 7s with scimis) means it takes a lot to gang up on Frodo.
Of course Spies is an awesome card, and really does provide the most fun, but between
Secret Sentinels and Sleeps and the opp just not double-moving when I wanted him to, it really would take a strong set-up to get this to be formidable. I do want to try it again with a Filter Fship, or with bottom-stacking (maybe even sneaks), but Moria--with or without Isengard--still scares me more, if only because it can swarm big at 5 or 6 with some regularity.