Padding to make the post not so obvious........................Flarum is awesome and so flexible. This can be circumvented by using Issyrocks filter extension and filtering out color=white on white themes and color=black on Dark themes.
I'm not sure if this was mentioned yet. Granted it's not a pro-dev solution and I've been drinking but...
Couldn't you?:
A: use the Landing Page extension and use a custom css that hides the login header and only displays a under construction type singe page?
B: use issyrocks user extension and do a send all to every member stating down time?
C: create a easy to execute script that changes your nginx or apache server to point to a 404 page or under construction page ?
D: a combination of above?
Side note:
Just saying .. #dropdeadFrederick your posts put a sour taste in my mouth just reading them. Your social graces need developing. It's not personal, it's just my opinion. Your that guy that gets thrown off the boat in movies, and people clap.
What a nerd bully.