Considering the Specialized Sequoia Elites endurance-focused design, what innovative, yet functional customizations could be implemented to further enhance its versatility and comfort for ultra-distance riding, particularly with regards to integrating advanced lighting systems, ergonomic accessories, or bespoke storage solutions that wouldnt compromise the bikes overall aesthetic or aerodynamic profile, and how might these modifications be achieved through a combination of aftermarket components, 3D printing, or bespoke fabrication techniques?