Yup, the destruction sucks in comparison to BC 2. That was one of the main things that made it so good, it changed how you played/the environment.
Heck you can't even run a few trees/poles down with a heavy tank going full speed, the tank just comes to a halt as soon as you go into anything like that. :/
And yes, supposedly the reason they limited the destruction was due to the battlefield just being flattened in the end, personally I didn't see the problem with it though, the round was usually over by the time it was really bad and it meant that you couldn't just camp, always had to be on the move.
Oh and no terrain destruction/holes, had it in the alpha/beta but people were glitching/falling through the map so DICE just removed it and didn't bother to fix it, too much work.....
And to echo what other people have been saying, won't be touching BF 4, no faith/interest in DICE any more and don't want to support a company like them and most definitely don't want to support EA, besides getting bored with modern shooters now.