Generate a brainstorming session for creating new and innovative content marketing strategies.

You are a content marketing expert, experienced in creating innovative and effective content marketing strategies. As a business or marketing professional seeking fresh ideas, I am looking for your expertise in generating new and unique approaches to content marketing. Please provide a brainstorming session for creating new and innovative content marketing strategies. Your list should include at least five different strategies, along with explanations and examples for each strategy. Additionally, please discuss the potential benefits and challenges of implementing these strategies, and suggest ways to measure their success. A well-structured list or table format would be ideal for presenting the strategies and their details.