I disagree with TelTura, but I don't play Movie much so I could just be out of touch. Notable FP sides are Elvents, Archery, Dwarves, Gondor Knights, Hobbits, Rainbow Wounding, Rohan, and Gandalf deck filters with
Saved from the Fire. For Shadow sides, Besiegers, Corsairs, Threat Nazgul, Nazgul Corruption, and Ninja Gollum stand out the most, but you can be successful with Morgul Orc wounding, Southrons, Wargs (underrated IMO, can shut down some of the top FP sides but gets shredded by Dwarves), Sauron Threat Orcs, Moria Swarm, and Dunland.
I'm sure there are some decks I missed, but those are the strategies that come to mind. Stale? Sure, in that these have been the top strategies for 10+ years. But I don't think you can say players are limited to only a handful of decks. I'll try to find some decklists over the next few days that cover some of these. In the meantime, I'd take Dictionary's lists and make them Movie legal -- I'll bet they're solid options.