I just watched hours of the old beta casts pre beta public release and none of those issues are there at all - in fact the exact opposite is true, the pathing is great, units respond instantly and vehicle combat is far far better than it is now.
ALl the effects look and act better in game and there is advanced terrain destruction - I have seen no squad wipes and inf combat is clearly superior in the video version of the game.
Cover works and yeh I cant agree with what you are saying. You are getting what I am saying mixed up you are thinking of the beta we all played and I am talking about the videos I posted specifically - two different things in my opinion.
Just watch one of them for like 20 mins and you will see what I mean -go to a point in the game where there is vehicle combat and you will see
I played all versions of the alpha and beta build and they were all dog shit compared to current build we have now. You can't possibly say that you can determine unit responsiveness from a video of a replay where you cant see the time difference from click to action nor can you see the effort put in by the players to over come the dog shit vehicle pathing in the alpha and beta builds. So unless you actually PLAYED those old builds lately you can't say one is better than the other with regards to the points I have addressed.
The graphical effects are subjective, to me they don't look any different.
Your comment about "cover working" is dubious because the cover modifiers have not been changed ever, from alpha to now unless you can elaborate on your comment.
The guys who were allowed to release pre-public beta footage also didn't have a special build.