In all honesty, Yahtzee's idea sounds a lot better than the original dross. At the very least it sounds like something I could get engaged with... Epic story line and deep characters. Could be all action, could be an RPG, could be a little of both. Could be a really good game.
As for the 'big and alarmingly bemuscled guys' thing, he keeps bringing it up because its still retarded. Even going back to the perfect example of ridiculously over the top macho-men, Duke Nukem, is actually not body-builder size. He looks pretty buff, but he also looks like like a person not a mutant.
I have NO idea why mediocre game designers keep going to the freakishly huge stereotype (and also the freakishly tiny for female co-stars) because it doesn't even look like a cartoon... cartoon artists can draw people who are in proportion.
Particularly when you look at real people who kill people for a living (Army/USMC etc) sure they are in awesome shape, but they don't look like bodybuilders. Theres a difference between being a big strong physically capable guy, and being someone who just pumps iron all day. Even then, most retard-space-marines look like your strapped two terminator era schwarzeneggers together. They don't even look like people.
What annoys me the most is that the best protagonists (JC Denton, Garett, etcetcetc) look just like regular guys. Ok maybe in good shape, but they aren't deformed. They are average height and weight. The reason why you connect with the characters is because you can project onto them and empathise with them. It also makes the character feel more 3d, because I don't just look at the character and know exactly what his deal is. When I look at a giant-muscle-guy I know that he's just going to kill things, and I'm never going to care. And I feel the developers have the same feelings. They drew the guy to tell you everything you need, so they just don't bother putting in anything that adds to him, making for a shallow game.