I have to say, I don’t mind the rate that WB/DC is releasing its films. Two films in 2016 (Batman v Superman and Suicide Squad) and 2017 (Wonder Woman and Justice League). Aquaman last December (their only release of 2018) followed by Shazam in April and Joker in October. Next year we’ll have Birds Of Prey in February and Wonder Woman in June, and then two releases projected for 2021 (The Suicide Squad and The Batman).
Of course, there’s lots of TV and animated stuff coming out in between. But two a year, spring and fall or summer and winter, seems like a good way to keep new stuff coming out but have it still feel like an event.