Yahtzee may not like review scores, but his idea is a good one: have not a 1 to 10 range, but a 5 to -5 range.
That scoring makes it feel intuitive why really low scores are so rare for games with any kind of budget or passion behind it. Even the failures usually have something vaguely interesting about them, if only for a while, so in the old range a 6 instead of a 5(complete meh), or in the new range: a 1.
Game developer should probably have to make a conscious effort to really piss off a game reviewer. That -5 being FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU~!!
Then again, most game reviewers don't buy their games with their hard earned money, but get a review copy, so that will mellow them out. Unless skillfully trolled they have little cause to lose their shit.
Something to consider in relation the the average, poor gamers out there.
I found it appropriate that Movie Bob was on the panel, even though he's mosty a movie reviewer, because I noticed somthing about Jim, Ben and Susan.
They all seem to treat games as just longer, interactive movies in an important aspect: for them it is enough to say "I like it" during the short time they have with the game before the publication.
None of them feel the need to analyse their games (but rather their feelings), which makes it impossible to properly judge long and replayable games.
This is alright for a game you pick up, play through once and discard, but bad for a strategy game or a game with a focus on competitive multiplayer. Even for a roleplaying game longevity may be important. This is where some measure of objectivity does come in play. Things like the amount of depth, playstyles and options and game balance.
Merely explaining why you felt what during your short time with a game isn't enough for something that's supposed to last longer.