A lot of people bemoan the lack of originality in Hollywood these days. While there is a lot of validity to that complaint - the market is awash with unnecessary sequels, reboots and remakes - there are plenty of great adaptations coming out. Not everything has to be an original story to be excellent, after all.
Novels that were once considered completely unfilmable (like The Lord of the Rings and the upcoming adaptation of Stephen King's Dark Tower) are being made into great movies, and decades old Marvel and DC comics are being turned into record-breaking blockbusters.
Sure, certain things like 2012's Battleship or the upcoming Emoji Movie seem like empty cash grabs, and some turn out to be disappointing or even terrible. But there are a wealth of properties out there that would make brilliant movies with minimal effort. Everything you need is right there, just waiting for the right script, the right cast and the right director.
From video games to web comics, there are dozens of clever ideas, engaging stories and three dimensional characters that would stand head and shoulders above random Jumanji sequels and fourteen different Transformers movies.