Hey Hotaru!
Thank you for giving the game another shot after all that updates We’re very glad to have you back and hope you like the changes we’ve made.
I can’t give you a simple yes/no answer to your suggestion, but I will pass it along to the dev team.
If you and your friends are playing on a private server (or if you’re in single-player) you can always turn Purges off for the day/night when you all log off. Or you can set specific parameters for when you want the Purge to attack, eliminating offline Purges altogether.