Personally speaking, I'd like to see more
street circuits on the calender, perhaps incorporating them into prospective markets (ie. Korea/Seoul, India/Delhi-or-Mumbai, Russia/Moscow, Turkey/Istanbul, UAE/Dubai, etc) to whet the appetite of the locals prior to building a full-blown F1 GP venue, meanwhile refurbing/rehabbing the ol' memorable, tradition-rich, historical tracks (ie. Magny-Cours, Imola, Jerez, Silverstone, Fuji, Watkins Glen, etc).
It'd be neat to divide a "tri-season" (Spring|Summer|Fall) into regions, as follows...
Late-Spring
1a- Korean GP
2a- Singapore GP
3a- Japanese GP
4a- Chinese GP
5a- Asia-Pacific GP (floating)
Early-Summer
1b- Malaysian GP
2b- Australian GP
3b- UAE GP
4b- Russian GP
5b- Turkish GP
Mid-Summer
1c- Spanish GP
2c- Italian GP
3c- British GP
4c- Monaco GP
5c- European GP (floating)
Late-Summer
1d- Portuguese GP
2d- Swiss GP
3d- Hungarian GP
4d- German GP
5d- Belgium GP
Fall
1e- Canadian GP
2e- United States GP
3e- Brasilian GP
4e- Mexican GP
5e- America's GP (floating)
(just thinkin' outloud, all might make too much sense - hence it'll never happen!

)