No matter how good you may think James Cameron
's Avatar is, you're probably not going to accuse it of being overwritten. Heck, it's name is pretty much synonymous with derivative storytelling, with comparisons always being drawn to Dances With Wolves
, Pocahontas, Ferngully, The Last Samurai
, there's probably a few more in there that I missed. The franchise has proven it can be successful with a mediocre script, so why are sequels taking so long to get made? Well, Cameron is still writing them.