Problem is this is partially Marina's fault. From her own reaccounting; it was basically her first job. The writers would go to the other actors and ask what they'd like to do in a given episode, or how they'd react to something, basically making the actors part of the script creation.

But Marina told the writers "uh, I don't know. Write me something. That's your job, isn't it?"

By the time she realised she had the power to actually make her character her own, it was already several seasons into TNG and far too late to actually change anything. The writers had long since stopped trying to include her in the writing process.

Hmm... I'll try and find a clip of where she told this story...