Yeah, the chicane isn't really an overtake area, its more of a mistake-causing area. Its also perhaps an area to provide a bit of setup contrast, becuase its the slowest area on the track, so a car that accelerates well from low speed and has good mechanical grip will work well there but maybe not the rest of the circuit.
So I guess it really sets up the racing for the national straight (or Wellington, whatever you want to call it) into Brooklands.
At least Abbey is quite good, but I still think Club is messed up now after watching the GT1 race. I don't like it as a double-apex corner, it was better as a gradual apex.
I still like the circuit layout though, it looks fantastic to drive on and thats the main thing with Silverstone. I quite like the nice low speed twisty section, it kind of breaks it up a bit almost like Casio at Suzuka. If this ends up in Gran Turismo, there are several potential overtaking places at almost every corner. Bascially only the Copse-Hangar Straight section is the only nigh-on impossible place to overtake, which is fine because its more of a fantastic driving experience through there rather than a particularly great racing section.
I will miss Bridge and old Club though.