You can delete or cut with delete key on the keyboard (or do you want it to be closer?)
You can set redo to Ctrl+Y through custom keys.
"Should be able to double click on first item in event." AGREED!
"Ctrl+A" AGREED! Pretty standard stuff for any windows open. But Ctrl+A seems to be only tied to the layout only for now. You can get around this by holding shift and click the first animation then the last.