Personally id like to see a African GP back.
However, id like to also see the European GP being just that, a GP that floats between about 10 diffrent tracks in Europe that are at FIA Level 1A standard for F1 races, and do away with the European GP in Valencia, have that track and Cataluna swap every alternite year.
Heres a list:
Portamao - Portugal
Motorland Aragon - Spain
Circuito de Navarra - Spain
Zolder - Belgum (If upgraded)
Donnington - UK (If upgraded)
Snetterton Motor Racing Circuit - UK
Red Bull Ring - Austria (Old A1 Ring)
Masaryk Circuit (Brno) - Czech Republic
Bugatti Circuit/Le Mans - France
Sachsenring - Germany
Circuit Park Zandvoort - Netherlands