I'm a relatively new player, and I've enjoyed the game so far. It of course, has it's fair share of issues, including but not limited to: AI pathfinding difficulties, UI or control issues, and geometric glitches. My request is for a smaller, more niche feature, and I would not be surprised, nor upset, if it gets ignored. Simply: alt+tabbing from the game in fulscreen mode is 'bulky'. It takes a solid 3 seconds of black screen to move from the game to other windows. Windowed mode does not fill the entire screen, regardless of the resolution, and conflicts with the taskbar, making it unsightly. Considering the amount of downtime you can have while playing, I believe a Windowed Borderless option would improve ease of life and make the game feel of a high quality.
Thank you,
alexjedi
tl;dr:
Add Windowed Borderless mode lol