I consider myself cautiously optimistic.
Not because of the record, but because the O and D starters have dominated.
I am only "cautiously" optimistic, however, because:
1. With exception of WR, LB, and, maybe RB, depth is a real concern.
2. I've watched TT's OLs for too many years to be convinced even by 3 really good performances.
3. I'm worried that, especially on defense, that the performance may be skewed by the Packers clearly throwing "more of their playbook" out there than their opponents. It's one thing to dominate when your opponent isn't doing much gameplanning...it's another to do it when both teams are pulling out all the stops to win for 60 minutes (or, perhaps 40 in the case of the Lions and Bengals).
4. Until roster is set, we won't know what special team coverage and return units will look like.
And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.
Romans 12:2 (NKJV)