Looking like this will be the rest of the calendar:
Spa/Monza/Mugello (Belgium/Italian/Tuscan)
Sochi (Russian)
Imola/Nurburgring/Portamao (San Marino?/German/Portugal)
My Thoughts:
Things are starting to become a little stretched, venues are available, however id like to see the schedule start to be back to backed, the triple headers will take their toll on not only the teams and suppliers but the media as well. Spa/Monza/Mugello should be the last, team up Sochi with Nurburgring, as Hockenhiem has lost interest, or Nurburgring has offered to cover costs better. Nurburgring in October??? Its a bit sketch weatherise, but its always a fun race there.
Then have Imola and Portamao together, this will round out F1 in Europe unless we can find another two venues here, id suggest that November and December will see two races in Bahrain and Abu Dhabi respectively as this will ease the strain and give us 17 races. in the season, end it, call it a day, give the teams and media a decent off season. If that is achievable, then move on to 2021 with a full season, with spectators if possible. Im not gonna say that 2021 will see F1 races with spectators, i think that we will keep seeing closed door races for a while to come. Im thinking that 2022 will be the first season return to a normality, this will go for football (Soccer for the USA), other live sport and live events like music gigs and such.