1. Jenson Button can look after a set of tyres very well.
2. Lewis Hamilton spent most of the weekend behaving like an immature brat. Booked for dangerous driving in a road car, eliminated from qualifying in Q2, and then whining petulantly over the radio because the team had put him on a two-stop strategy...somebody needs to get through to him and convince him that being a tosser is not likely to result in any more championships. Maybe he also needs to be forced to read "How To Make Friends And Influence People"...
3. Two races, two mechanical failures for Sebastian Vettel...is there merely a correlation between the departure of Geoff Willis from Red Bull last Summer and the sudden reliability issues with Red Bull, or is this a causal relationship?
4. Mark Webber spent most of the race behaving like a driver trying too hard
5. Although we have only had 2 races, there is next to no sign of the blinding speed that Michael Schumacher used to be able to deploy in Formula 1. Two races, two finishes behind his team-mate. If Michael cannot start to out-qualify and out-race Nico Rosberg in the next 2 months, we may have to accept the end of the Schumacher era. in fact, if he fails to achieve that, I would not be surprised to see a Schumacher retirement after the German Grand Prix and a return to racing for Nick Heidfeld
6. Sauber has some sort of issue with its rear wing support
7. Manor/Virgin looked like a bunch of amateurs with their admission last week that the fuel tank on their car is too small. This will be expensive to fix, requiring a revised chassis.
8. HRT getting Karun Chandok to the finish line is huge for a team with no pre-season testing. Now where is Geoff Willis currently working?
9. Sauber has a structural issue with their front wing support
10. After just over one season, the "new" aero rules have been totally circumvented by the teams already. Sophisticated double diffusers, bargeboards all over the place...the cars still look butt-ugly and overtaking is still extremely difficult. The OWG target of 50% was laughable. They should have gone for 80%.

On the subject of overtaking...this article in Pitpass explains why a focus on aero changes is totally misdirected. A major component of an anonymous F1 engineer's proposed solution is deceptively simple:

All that is required is a tyre specification that is hard. Really hard. Really, really, really hard. REALLY HARD! A tyre that is not capable of fully transmitting the drive of the most powerful engines, the braking force of the best brakes and the aerodynamic grip so carefully authored by geniuses armed with banks of computers. Moreover, a tyre so hard that it cannot shred and shed itself into tiny balls inevitably winding up on the track surface either side of the racing line and rendering the 'off' line route required to overtake as undrivable. As a benchmark, think in terms of a tyre that offers about the same degree of grip on a dry circuit as the present wet option offers on a damp one.

This suggestion certainly makes sense...I remember in the mid 1980's, proposals were being floated in CART to reduce horsepower, since constant development had taken engine horsepower into the 800+ bhp range. Mario Andretti and other leading drivers objected, stating their firm opinion that a reduction in horsepower would actually be dangerous. The current cars, loaded with downforce, were, they contended, actually too easy to drive, which was allowing mediocre drivers to set good times in qualifying, even if they subsequently failed to perform well in most race situations, which then converted them to dangerous moving chicanes in races. Nothing was done about the horsepower issue, and the racing did not seem to suffer.
The suggestion also makes sense from a personal experience perspective. I was once driven around the Stowe Circuit at Silverstone by Darren Manning in a Caterham Seven. This is an open-top sports car with close to 300 bhp, but this car was fitted with narrow-track hard Yokohama tyres. I had a very good view around most of the circuit through the side windows, as Darren constantly worked to prevent the car from snapping out of line every time he applied the power or tried to change direction at speed.
Any time that there is too much grip (be it mechanical or aero or a combination of the two) cars will look like they are driving on rails, and there will be limited opportunities for overtaking. In the F1 ground-effect era, the massive amounts of downforce being created by underbody tunnels resulted in cars that seemed to have no tendency to snap out of line. The cars were effectively underpowered, and the only time you got the impression that they had any vices was when watching the turbo cars, whose peaky power delivery and throttle lag resulted in them getting sideways under power occasionally. A well-sorted Cosworth car looked to be running on rails.
As Frank Dernie noted in email discussions with James Allen recently, the change of regulations in 1983, with the abolition of ground effect, did not in itself lead to any increase in the amount of overtaking. Much of the lost downforce was simply recovered by the use of big ugly wings front and rear, and the tyres were still as sticky, so the overtaking picture hardly changed.
One final comment: reversing the grid will not change anything, unless points are awarded for qualifying. Absent any incentives to quality well, the fast drivers will simply sort their cars in free practice and then sandbag in qualifying to make sure that they start at the front. We will definitely need a 107% rule then...