looks like a good track, the last corner though is damn big, they could've added more shortcuts there for more layout solutions (maybe a good test place for the future, like Paul Ricard?) or make it more twisty rather than a long boring corner. It annoys me because its so big that given the aero efficiency in modern F1, they will just floor the throttle there meaning that it will be like a curved version of Fuji straight :S
And yeah, I agree with Gav, looks like a greener Estoril :P I also think that the old Estoril was pretty similar to Barcelona.
TBH I dont see anything wrong with Estoril. Its still a great track for F1 afaik. With a few changes, adapting to this proposed layout Estoril could be back, instead of building it in another place...