I agree, with theatres shut for more than 2 months now, and I assume the theatres will open by 15th august (best case), that is 5 months of theatres being shut down. In this time, almost 30 movies would have released (Small and Big Budget movies included).
It has really taken a halt on shooting films, post production as well. Many actors aren't able to sign new films or announce any new films because of this. The biggest announcement, the speculated YRF 50 is postponed cos of this.
This announcement is set to be huge and was supposed to be done in April, but now moved to September 27th (Yash Ji's birthday) according to sources. Almost all the actors you mentioned above will have a huge film lined up. War 2, Dhoom 4, Tiger 3, an Akshay Kumar Action film, Ranbir Kapoor & Ranveer Singh film. It was going to be huge.
But now everything will be taking a back seat, for at least a year. As of now, the best case can be one big film each on 2nd October, Diwali & Christmas/New Year. But this is just wishful thinking and almost difficult to implement.