What I saw

Offense:
The OL is not ready for the season opener. RT Jonathan Stinchcomb continues to get abused on pass protection.  The loss of center Jonathan Goodwin is magnified due to the fact that Matt Tennet proved not ready to step up to be his replacement.  This sent the Saints scrambling to find a veteran who could step in.  Fortunately, Olin Kreutz was available. Unfortunately, this has caused a lack of chemistry that is vital for any OL's success.  The good news is the Saints have three more pre-season games to find that chemistry.  This is a surprising development to keep an eye on. However, I liked what I saw in free agent center Cecil Newton. He looks quick and athletic for someone of his size and gets to the second level in a hurry.   
RB Joique Bell showed why the Saints released Lynell Hamilton.  Though physically similar, Bell is the more polished and versatile back. He can also be use as a kick returner in a pinch.
Drew Brees looks a little rusty.  Granted , he did not get much time against San Fran, but reports from camp is that Brees has not been as crisp as usual. I highly doubt it's anything to worry about, though.
Defense:
Greg Williams is taking no prisoners this season.  He blitzed early and often.  Perhaps this is a result of the lack of off-season workouts, but I suspect the loss to Seattle has something to do with it.
Jonathon Casillas is my favorite to be the starter at OLB.  He shows no affect from the injury that sidelined him for 2010.  He has speed, instinct and explosiveness at the point of attack.  Former starter Danny Clark was cut prior to the 49er game because of this.  Will Herring will provide quality depth.
CB Johnny Patrick was impressive until he injured his right knee.  He looked further along than former first round draft pick, CB Patrick Robinson did at this point last season.  Hopefully, the injury won't keep him out too long.
DT Mitch King was all over the place.  He's undersized and may be lost in the numbers, but his motor never stops.  He looks like he'll be a tough cut.
Special teams:
Two words, Joe Morgan.