Here's my two cents which may perhaps help the discussion move forward, or let a final decision to be made: I agree with RFof and Anouleth saying that Oliver will never, ever be deployed in Endgame. I comprehend what Radiant Dragon is arguing (Oliver's endgame performance vs Lyre/Fiona throughout their respective chapters), but the simple fact is that Oliver is only ever used in normal runs as a gimmick unit, and in efficiency runs, he has no chance of being fielded at all. Like RD pointed out, there is an enormous list of better options available options for endgame. Oliver has 0% chance of being used, which is worse than Lyre and Fiona being used in maybe one chapter.