Well here's a REALIST point of view.........
Reality is that if the starters had played at least a half against the Chargers, they would have put up a lot more points than what they did. It was the first pre season game, the Coaches saw what they wanted, and pulled the starters early. As for the turnovers, again it was the first pre-season game and those things have never been a big problem for the 'Boys.
Reality is the second pre-season game, Wade decided to play purely vanilla, whether it was the whining from last year's Broncos team or somthing else. The team did look rather listless, but that happens even in regular season games, (see the Buffalo game).
The Houston game, the starters, especially the offense looked really good. The defense played well, but I can assure you that they did not use their full blitz package. No matter how much you want, they are not about to show their full blitz package in pre-season.
Much of the bad in this pre season was by the 2nd and 3rd teams, who are herE for depth, and will never play as a unit in the regular season. The special teams, are a concern, but I think that once the special teams are set, they will settle in and play well. Hopefully we will not be punting much this year, and covering kicks will become a focus.