I have never used any automated corrections like Dirac, rePhase, Genelec GLM, Lyngdorf, Devialet, Anthem, Audyssey etc. what ever. The ones using FIR are said to handle timing/phase including crossover delays, but I wonder.... It is hard for me to believe that those programs would give similar corrections.
Having performed hundreds of in-room measurements of various systems (2.1, 3-way. 4-way) and rooms, I must say that it is an extremely difficult task. Optimizing to one spot is ok, but which spot... measuring response around 40-200Hz even outdoors is painful, and in-room we have six boundaries and often several openings in the those, multitude of reflections and standing waves.
Nearfield with similar distance discrepancy is a good basis for delay/phase match . Then you have to set eq and gain by other measurements. one problem is that sub and woofer spl response at actual placements are different from nearfield and each other, also phase, mainly because of boundary gain.