[Alt-Tab] Remove blinking for attention-seeking windows.
[Alt-Tab] Let window-handling keyboard shortcuts work also in non-persistent mode.

And let Ctrl+n toggle window-minimized (free up Ctrl+r for other purposes).
[Alt-Tab] In preview mode, show the application icon in the window's top-left corner.
[Alt-Tab] Unify key-pressed and key-released handling. Execute some actions on key-release instead of on key-press.

Actions that should not be repeated if a key is left pressed down
are best executed on key-release. Close-window is one example,
Zoom is another.
[Alt-Tab] F2 closes Alt-tab and brings up the run dialog.
[Alt-Tab] Lower opacity on preview of minimized window.
[Alt-Tab] Simplify the keyboard shortcuts for a couple of non-destructive window actions.

Minimize/restore windows: 'n' only.
Move to next monitor: 'm' only.
[Alt-Tab] Add a shortcut to activate the selected window without leaving Alt-Tab.

The shortcut is 'a'. You can use it to change the window tablist-order without
immediately switching to a certain window.
[Alt-Tab] Overview of on-destroy cleanup.