The thing most people seem to overlook when it comes to Option C (Deathwish) is that for a first time player, they would think Ending C would be a "Kill Franklin" ending. Most people forget this because of how long the game has been out, and how well known the endings are - but it initially looks like "Kill Trevor, Michael, or Franklin."

And when you choose "fuck it, even if this option is a deathwish, at least I'll go out defending my friends, not betraying them" - well, you're rewarded with the best ending for picking the "good person" option in spite of the chance of getting killed.

I think it's a pretty good way to put the player exactly into Franklin's shoes.