a real shame, imo, that they showed his eyes/face/whatever in h4 legendary ending. chief is a vessel for the player so that the player can imagine themselves as the chief. any specificity as to what his identity ruins that, again imoExcept he is also an actual character with a backstory, personality, and development.
Hear hear. Master Chief may have started off as a "pair of empty boots to fill" starting in CE, but he's since evolved to be so much more than that. Reading about his upbringing in the SPARTAN-II program, and speculating about the long term effects of that, has been fascinating.
And to be honest, I've seen the "empty boots" trope used a lot in games over the years. Halo and Master Chief can be forgiven because they did this all the way back in 2001, but in my opinion this trope is old and overused. There are a lot of games were the player and main character are supposed to be one and the same, but there are no moral or dialogue choices, so they just leave them silent.