If LOTR came to replace TL, everything except Popeye would be bulldozed
none of it could really be retrofitted for Middle Earth except the barrel rapids replacing Popeye. The theater would likely be bulldozed for a family dark ride or an actual yearround show that doesn't leave right away. Dudley would likely be torn down since it's been left unfinished for years, and replaced with some sort of lavish E-ticket. I could also see a Baggins walkthrough, and some sort of flat ride as possibilities.