Well, currently we already have 23 races in calendar and according to current contract it can't exceed 24 races. So, some talks already started about removing one of current tracks from calendar:
https://the-race.com/formula-1/which-gps-are-at-risk-as-vegas-forces-f1-calendar-rotation/Monaco, Spa and Paul Ricard is at risk to be removed. Ok, I wouldn't miss French GP, I don't see removal of Monaco very likely, despite that's impossible to race there. But if they will remove Spa because of this track, I will be mad.
BTW, Las Vegas GP race will be on Saturday, 10 PM local time. I think it means that race will be 7 AM on Sunday in most of Europe

At first I thought what will be the time of this race as probably Europeans would be ready to go to work on Monday but that is a good solution to run it at 10 PM in the local time.Most people from the official Instagram F1 page were not happy commenting things like "We race for money" and "We can have a full F1 season running through the USA only" while I personally liked the track and it is in a really great place to be,the famous Vegas,you simply can't hate Vegas.