I am concerned the GOP will LOSE seats with this. That's my prediction. The new law gives priority to "communities of interest" over geographical compactness, among other things. Every leftist group will organize to have their interests protected and to deconstruct conservative enclaves.
Right now Republicans actually lose seats because of gerrymandering. The GOP lost two in the Assembly in this election. Creating competitive seats would force the party to recruit and run candidates all over the state. If it can't do that, it might as well close up shop. With a level playing field, it has a chance to win a majority. Under another Democratic gerrymandering, it has none. Prop. 11 isn't perfect but it at least opens up the political process outside of the interests of the political class. On the whole, its a good thing.
"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." - Manuel II Palelologus