I've noticed that often the "More..." prompt comes up after simple level messages, dialogue and actions which actually all fit into the 1-2 line buffer and thus needed no extra keypress to be read.
Once or twice the "More..." has needed passing via spacebar even before the second line of the message shows up which actually had "More..." written on the end.
Presuming that streamlining keypresses whilst not allowing the player to miss information is the general idea, I think it needs a bit more testing.