Is the Trek Speed Concept 9.9 tri bikes 68mm bottom bracket drop a fundamental flaw in an otherwise exceptional design, considering the pitfalls of stability and cornering at high speeds, particularly during technical descents, where the slower handling could counteract the bikes aerodynamic benefits, and are riders willing to overlook this compromise in pursuit of wind tunnel-verified speed gains, or should Trek reconsider this design choice in future iterations to better balance stability and aerodynamics.