Borderless Fullscreen not an option

As a gamer with multiple monitors I tent to alt+tab to interact with other programs while waiting in lobby etc. I have noticed that when doing so with Marathon I come back and there are a number of issues present primarily that my mouse cursor will lag or disappear for a lengthy period of time. This is usually only fixed by going into a match however if it occurs before I have geared up I often need to restart my client. I believe that having a Borderless Fullscreen option would be helpful - perhaps not to directly resolve the mouse issue but to make it a better experience for players with multiple screens.