The paper introduces a novel, systematic method for identifying the most critical issues impacting consensus quality in preference-based conflict situations. By analyzing the effect of removing individual issues on consensus outcomes – both for the entire group of agents and within smaller coalitions – the proposed approach provides an understanding of prioritizing negotiation efforts and reducing conflict intensity. A case study demonstrates the practical effectiveness of the method in real-world decision-making contexts, showing how it can guide agents toward higher-quality agreements. While the approach offers a structured framework for issue importance analysis, its current application is limited to scenarios with clearly defined agent preferences.