By the last half of the season Spencer should be really coming into his own. He's gotten better and better just in these three games.
Also, by the second half of the season, the whole team should be getting into Phillips scheme and really starting to play well.
Plus, by the second half of the season, we should have a healthy Newman, A healthy enough to play some Ellis, and Tank Johnson who is getting used to playing Phillips NT position.
You throw in a more experienced Spencer, a healthy Newman, plus Ellis and Tank to this defense and it should really cause some problems for opposing offenses.