This thread has a good discussion concerning saddle position, despite the title. I would like to move to the next fitting step of hand position via, TT length and stem length as it impacts handling. This is a black hole in my mind because where your hands are impacts the handling of the bike due to the position of the hands and weight relative to the front axle (fore, on or aft).

So once the saddle is in the “right” position relative to the BB, what is the next secondary reference point? Clearly hand position moves a lot from top of the drops to hoods to drops. Even in the drops it can move from the end of the bars to facilitate shifting with bar ends or into the radius for braking. The distance varies, so do you set your bike up based on where you place your hands the most and then pick the stem length based on handling or saddle to bar?

It would make sense that if you did that then the TT length would determine where the HT is located with the angle and fork offset determining where the axle is, hence the handling response.

Length of stem is a compensator to TT length but impacts handling so what say you?