disappointed to see all the ESPN hate here...
but if my opinion counts at all, we love it and go every visit. We've been to many of the popular WDW places (Kona, 50s PT, etc) and while we love those too, ESPN we always go to every trip.
Why you should go:
1) if you have a sports fanatic in the family.
2) because you have 2 choices/lines at the door. one for the bar (less of a wait) and one for a dinner table.
3) they have the best bbq chicken wings i have ever had and that's literally why we go, for the bucket of them.
4) you can go eat some for me, now that i don't eat meat anymore.

although i am tempted
5) it is always packed (so i am not the only person who likes it) more so on big game nights, and the bar obviously has less of a wait but they have tables by the bar area too.
So you should definitely try both!