Bregmann Roche
Member
What you're (and what I am) saying is highly opinion based, though. Armor abilities being a "less favorable trait" is something you believe, but not something that everyone believes entirely. A lot of people enjoy AA's. A lot of people enjoy AA's except the obviously broken ones. So how does your evolution theory occur, when everyone has differing opinions on what type of Halo they want?
In this case 343 can look at matchmaking populations across both Halo 3 and Reach and amongst playlists within Reach. If Reach's overall population is significantly less than Halo 3's was at a similar time in its life-cycle then they know there is a problem with the MP experience.
If playlists in Reach that de-emphasize bloom, AAs, etc. have healthier populations than playlists that feature those things (or vise versa): they can draw conclusions about what players enjoy in a Halo game.
From an individual player's perspective the sort of "natural selection" that U4ix was talking about IS subjective, but from the perspective of the devs, who are just trying to make a game that a large number of people will enjoy, it can be objective.
There's some abstract thinking that has to go into the analysis along with some leaps of faith logic-wise, but it's not even a mostly subjective process if the devs do it right.