I think I would be limiting my audience by a large margin if I did that.
Yes, you would, but you'd also guarantee that all players have shaders enabled.
NEW QUESTION: I have, instead of using a preset shader configuration, gone to the Advanced Settings in the 'Environment' options for the server; I changed ambient color, shadow color and basically made everything dark in color. This creates the same effect, but does it allow users who have shaders turned OFF to experience it the same way? (i.e. unable to see a player against black surfaces, lights penetrate the darkness, hard to see in darkness, etc.)?
Why don't you just find that out by yourself? You can just turn off your own shaders and see what it looks like.
