Fibre to the home and broader FTTX programmes are central to the digital transformation of Saudi Vision 2030, but large-scale implementation is presently hindered by the cost of civil works, permitting, fibre corridor congestion, and the need to ensure quality over long periods of delivery. This systematic review combines evidence published during 2020-2025 on FTTH/FTTX implementation challenges and optimization approaches, with a focus on the Saudi delivery context. Following PRISMA guidelines for screening and thematic synthesis, articles are grouped into five themes: programme management and right-of-way (ROW) challenges; GIS planning and outside-plant (OSP) optimization; construction methods and quality assurance; PON capacity building and migration planning; and operations, resilience, and sustainability reporting. A reference architecture is described that combines Vision 2030 ambitions, geospatial planning, build telemetry, and operations feedback into a closed-loop optimization process. Throughout the synthesis, the most successful approaches are socio-technical: permitting automation, design rule checking, build productivity analysis, and data-driven compromises between speed and lifecycle risk. The paper concludes with a logistics-driven research agenda for Saudi Vision 2030 programmes, emphasizing quasi-experimental studies, cost-per-foot accounting, and corridor governance models for mega-projects.