I for one hope to see a LOT more open world games, if only because if enough people try it, one of them is BOUND to do it well eventually. As it currently stands, all 5 elder scrolls games are probably in the top 20 open world games of all time, which considering they are mostly shallow buggy messes says we have a LONG way to go in improving the genre, which has the untapped potential to provide the greatest experiences in video gaming.
90% of everything is crud, including the remaining 10%, so give me all the ride to hells you can muster and maybe I'll live to see that final 1% one of these days.