I would want better alt-tab behavior on multiple screens and separate areas/desktops, its current behavior is really annoying, example:
If i have Safari opened on my main monitor at "Desktop 1", and then a Atom window on my main monitor at "Desktop 2", i can easily cmd-tab between them, no problem, BUT if i put another Atom window over at my secondary monitor (i use it as a code reference, documentation and other stuff), now, cmd-tab basically gets ruined:
If i am coding in Atom on my main monitor, and then alt-tab to Safari to check my changes, then alt-tab again, i CANT get back to Atom on my main monitor on "Desktop 2", not even with the alternative tab that only tabs between the same app windows, now, instead of alt-tabbing between Safari and Atom on my main monitor, it only accepts alt-tabbing between Safari on my main monitor and Atom on my second monitor that i use as a reference only, if i want to get back to the Atom window on my main monitor i have to press on the Atom icon in the dock.....TWICE before it changes to "Desktop 2" on my main monitor, super annoying and ruins the workflow...OS X should REALLY know which of the Atom windows that had its window focused last time
A fix for this is all i want in a new OS version, maybe expanded thumbnail in mission control would be nice too