I think it's too early to tell whether this will be underwhelming or not. I've got a good impression from this trailer and I'm excited nevertheless - it is Star Wars after all, haha. Yes there are similarities with Empire Strikes Back, but I'm interested to see what kind of direction the trilogy goes in during The Last Jedi and into Episode IX.
One of the greatest movies of 2015 for me, incredibly enjoyable and under the radar. I only watched it because i noticed it's second weekend gross was higher than the first (a rare feat and an indicator that word of mouth is good).
Hard for it to top the first because he'll be a bit more seasoned but the trailer was pretty good.