Have them disabled by default for the client, and disabled by default for default maps like Bedroom, Kitchen, Slopes, etc.
Yeah but that's the kind of decision making process someone with their head not up their ass (i.e. not badspot) would have done - or just axe the shaders entirely, they sucked, and I dont think anyone even uses them regularly.
And on the subject of the thread I'm in camp "Blockland needs a decompilation/port/fork/whatever." - but the thing is unless that decompilation works perfectly with all the existing mods it's gonna be pretty pointless. I don't think any of the people making mods - not to mention all the modmakers who quit years ago - are gonna have much fun tweaking everything they ever put out to and then re-hosting it.
A bigger problem is there's kinda nowhere for any sort of community to congregate - forums are locked, steam forums are in a similar state to this one of constant "bl is dead", and forget discords and forget anyone who suggests them - those are even worse.