I agree that the table isn't very useful since it just outputs strings to chat. It's there as an optional thing really so that DMs can - if they want to - use it if they don't want to use the template. If I remember correctly the Story Template were just being developed whilst I was converting the module so the tables were written before story templates were in the ruleset. It was only after the module was finished that the templates were included in the ruleset and I went back into the module and added those in (which necessitated writing new tables). I just left the original tables in the module. I could just remove them but I doubt anyone will really use them and you are the only person to have mentioned them since the module was released 5 years ago. The table is just a simple table which allows for a single roll to generate all the variations for a beholder eye rather than having to roll on four different ones. It could probably be improved by outputting to a story entry rather than chat.