The Shadow of Mordor game was fun at the beginning but a lot of people started to get a little bored towards the end as you are forced to do the same thing over and over again. Since you are also stuck in Mordor, there is nothing for you to do besides killing off the Uruks.
Well, fans are saying that in the next game, they are hoping that the developers would allow them to venture out of Mordor. They are also hoping that Monolith would change things up every now and then to keep the gameplay exciting.
Of course, nobody really knows if there is going to be a Shadow of Mordor 2 game or not. We know that there have been a few leaks and more than enough rumors out there to suggest that a sequel is being developed but Monolith has never hinted that one is about to come.