It's the players who decide to wall and that's still going to happen in AoFE even with the nerfed walls. People play huns because they are fast and fun(imo) but you still have the option to play other civs and make your opponent match them.... it's mainly the people who watch pros play hun wars that complain about it rather than the actual players.
no, i've seen daut, chris, ralber and many many other top experts complain about how huns wars lost their fun with walls and cas and no more feudal wars... the only expert i remember that liked this was cyclops