Davis is also listed for a role in the upcoming Rogue One: A Star Wars Story so it would appear that Lucasfilm is planning to just use him over and over again as the Star Wars franchise continues.
Davis may be viewed as a “good luck charm” in much the same way that John Ratzenberger continually lends his voice to Pixar films.
There’s a pretty good chance that Warwick Davis’ role in Star Wars: Episode VIII will be something along the lines of his role here, a simple cameo with a character that you won’t even know the name of until you find it in the credits or buy the action figure.