It might be something that you are planning to fix in future patches but please solve the mouse lag issue that is present if running WC3 with default Direct3D11 or in windowed/windowed fullscreen mode.

You have to manually add -graphicsapi Direct3D9 and -windowmode fullscreen to the WC3 shortcut to have a smooth mouse experience. Choosing any other graphic and window settings results in a sluggish mouse pointer that makes the game painful to play. This should be set by default without having to mess around with shortcut switches.

Another issue pertains audio. When you change audio input from speakers to headset you need to restart WC3 in order for audio input to be switched. This should occur seamlessly while being in the game.