The developers can keep the game exactly the same in order to please the the old school players and continue to make the same amount of money off of them and hope they stay forever.
Or they can evolve the game and bring in new and more players and increase their revenue stream while striking a balance in order not to piss off the old school players.
I think they are choosing the later of the two.
So if YOU want to continue playing the game as is, you might want to switch to one of those l&k knock off games that don't get updated. Because change is coming my friend.
WHAT ABOUT OFFENSIVE CAPABILITIES OF FORTRESS??
geez....