How various features and capabilities affect marketing productivity, campaign effectiveness?

The short answer is that is the purpose of a marketing automation platform. The greatest benefit is visibility into a wide variety of customer touchpoints, and the ability to use those insights in the campaign logic to determine the next interaction or content preference. All of the leads data and profile data is available in the tool to define and control the optimal user experience. If you are integrating with a CRM, the sales team can be included in closed loop marketing methods. The power flexibility of the Marketo platform can facilitate just about any marketing campaign. If you have a more specific scenario, it may be easier to directly address your question.