CAPCOM has no clear plans for GFWL removal.

[Meturoido]

No wonder they've earned the CRAPCOM moniker.

http://www.pcgamer.com/2014/01/19/games-for-windows-live-will-soon-be-dead-hooray-heres-a-list-of-devs-removing-it-from-their-games/

[Kamatsu]

Do note that this game can be installed and played without needing access to GFWL server's.

The game is playable with a Local Profile - which means you do not need to connect at all to GFWL server's. You can install the game via Steam and when you run the game go straight to using a Local Profile.

So for single-player purposes, GFWL going down should have no effect on this game. If you want to know - yes, I tested this: no GFWL, downloaded the game, unplugged internet, ran game to see if I could start campaign.. was able to.