You can go in a fight blind. But most people prefer to refer to published guides to help them with the fight. It is probably preference.
In any case, if players want random stuff, we have things like Savage T8 towers. Random enough? How many have cleared it before complaining that they want more randomness?
Like Yoship said during the Q & A - if the far majority of the players can't even coordinate and handle a heavily scripted fight with tons of PoV and guides that explains the mechanics to the T, don't expect them to able to handle with random fights.
