Mobility as a Service (MaaS) personalisation represents a transformative paradigm for urban mobility, fundamentally reshaping how individuals access and utilize transportation. By integrating diverse transport modes into a unified, user-centric platform, MaaS promises convenience, flexibility, and cost-effectiveness. For MaaS personalisation to truly make public transport more convenient for everyone, it requires a concerted effort from policymakers, transport operators, and technology providers to foster an integrated, intelligent, and equitable mobility ecosystem. This paper outlines the critical components, benefits, challenges, and future trajectory of personalized MaaS, offering a comprehensive understanding of its implications for modern urban environments.