Getting disconnected near the climax of a really long game is excruciating. Your first priority, then, should be a connection framework that prompts me with steps to get me back to the game before my timeout period is up. Your "disconnected from server" screen is not enough. How do I get back to my game? GET US BACK IN THE GAME. Is it that hard to snapshot the game state until I get back? At least until my timeout period is up? You could even prompt the other player "your opponent was suddenly disconnected from the server, extend the timeout period to allow them to rejoin?"