Considering most of the lag machines are made by newcomers who aim to break the server. Maybe coal+ could do commands to give themselves necessary redstone components?
Another possiblity could be a seperate part of creative for redstone builds in which its allowed and gets reset every x amount of time. On top of that, being sectioned of in creative, its easier to monitor if its all in one place, easy to find. I'll even personally do often checkups to make sure nothing to large scale is present., I'm sure someone else could do the same.