I haven't been a big fan of the beta for some of the reasons mentioned in this thread. Things like stage hazards don't seem to have a point when they just knock you back, and a lot of times when I was sent flying backwards I felt like it didn't matter even if they built some meter. Then when you get hit by a super, you just instantly vanish in a poof, it's not satisfying like the great sound effect in smash when you spike someone down.