i3 and ratpoison are tiled window managers for Linux that make your whole computer behave like vim does. If you really are interested in simplifying the amount of work you do- you should consider abandoning the normal "stacked cluttered windows" paradigm in exchange for something that requires less pointless mouse work to achieve the same amount of work faster.

Most monitors have enough real estate to where alt-tabbing is not only unecessary, but counter productive and distracting. Its like using your foot to operate the gas pedal 100% of the time instead of using cruise control to drive hours in a straight line.