Sean Astin told a story of how a fan told him about a mistake in The Hobbit movies) have received a varied reception from fans, but the response has always been strong. Understanding this strength of feeling holds the key to the success or failure of the series.
In a prequel book, The Hobbit, made it clear that if trolls were exposed to sunlight then they would turn to stone.
While this seems like a minor detail, it represents the bigger issue of how dense J.R.R. Tolkien’s lore is for the world of Middle-Earth. Not only is there a huge amount of depth to the lore in The Hobbit and The Lord of the Rings, but Tolkien’s The Silmarillion takes all of that lore a step further. For the new The Lord of the Rings reboot series to be a success, the showrunner's chief focus will need to be on ensuring that their adherence to Tolkien lore is immaculate. Not only is the lore dense, but it is clear that the fanbase values strict accuracy when it comes to Tolkien adaptations.
The fact that this adherence to Tolkien lore is crucial for The Lord of the Rings adaptations has already been borne out by The Hobbit trilogy. The trilogy was a big-budget extravaganza and attempted to win audiences over with extreme special effects and fan-service-driven appearances from actors and characters from The Lord of the Rings trilogy. Ultimately, this was not enough even when coupled with deep-cut inclusions from The Silmarillion as it appears that The Lord of the Rings fanbase would prefer a faithful representation of the original content and lore than pretty pictures and fanservice.
While this issue is particularly apparent with The Lord of the Rings reboot, the problem is by no means unique to them. The reboot/revival on Peacock is set to face similar issues related to how it translates the wealth of pre-existing lore in a way that can appeal to both new and old fans of the franchise. Similarly, whenever a new comics adaptation from DC or Marvel Comics is produced, some viewers will be unhappy with the changes that have been made for the adaptation. While some liberties are inevitable with Amazon’s The Lord of the Rings reboot adaptation (adaptations are required to change things by their nature), keeping faithful to the lore and rules established in the wider world of Middle-Earth will be key to the new TV series’ success.