Some players have a “subtitle shift” feature that gets subtitles back into a reasonable position, but I’ve always felt a “subtitle zoom” feature would be much handier–zoom in (or out) only on the subtitle overlay, but not on the movie itself. The correct size of subtitles depends on screen size and seating distance, so it goes without saying that disc authors will target the median, making people outside the median suffer. Whenever I get the chance, I try to let player manufacturers know subtitle zoom would be a good feature to add. Whether it’ll ever be implemented, who knows. On the software side, I suppose we could try to convince VLC and MPC-HC rather than your more conservative hardware manufacturers.