I would have to disagree with JB's opinion here.
A core principle of the selection game is "Fully Body of Work", the underlying principle being that all games are valued the same no matter when they are played... that is a good win (or bad loss) is valued the same whether it happened in November, January, or late February.
Not only was the last 10 games metric dropped about 10-12 years ago, the committee goes out of its way year after year in their interviews to adamantly state that selection is not based on this principle, and that its not acceptable for them to select teams based on last 5 or last 10 games..
And its not just word salad from them. We have constantly seen teams with good ends to the season (like Texas A&M) not get in, and teams like Oklahoma recently get in because of huge wins in November. Remember the disaster we had to close the 2016 season? I think we lost 5 of 6.
Not saying going that way is the right or wrong way of doing things, but it is the way they do things and their historical selections back it up.