It was taken out because not a lot of people were playing it, and there are already a large amount of playlists in PvP alone.
By your point, every playlist should have a ranked mode. Dodgeball, Guardian, FFA, Warzone. Because people care about those modes as well. By the time TC have finished, we have over 100 playlists and no one playing them. And with the population being small already, more playlists isn’t gonna help.
You can still play Execution in Custom match lobbies, with your own rules and such (which I personally think is better than ranked Execution if I’m honest).



