I can now give my opinion.
Like @Ravenousfox said is only question of money. There are 2 big differences between classic and any other game called CPTW or something else. The Classic is an online game that needs servers to store mass storage like trophies,photos, history and many others and that cost money. Certainly the money of registered players and sales collected give a part of that money but why take a game that cost for servers and persons that care about at the moment they can make a game like COTW hosted in another company where all settings and results are in the computer of the gamer and only a litle part are needed in the server only to start the game. That is the reason you can play the game offline,except multi but there also is the PC of the host that make the job and you certainly know that if you start a new game in COTW you lost everything.It is normal all are stored to your PC.
But they have a problem and for that they will not stop the classic so easy and that is the subscriptions. The day you will see that there are no more way to subscribe that day the game is over. If subscriptions continues to come the game will live.
For me they make a big error because the Classic with a new look but with the same graphics and facilities ,like the inventory and the configuration of the keys , even with an higher cost for the player will work.
I have the same question one time more. Why no devs or communication manager don't take part in the conversation? is so difficult to accept the reality. What they wait for. That all players will gone. I don't thing that will happened. Online games of the quality of the Classic are counted in the fingers of one hand. And the beauty of the classic,other the environment is the way to have online all those thinks I said ,means ,statistics,trophies,lodges etc ,online store off ALL items (not locked) and the facility to buy what we want at the time we want. No points,locks and the obligation to play the game as a continuity .Don't forget you can't go where you want at the time you choose you have to "Continue" . Think if you have to continue for 10 years