What head unit and amps are the comps running off of. Maybe you can ditch the passive crossover? Separate level control and time alignment from mid and tweet would definitely help. As of now, the gain and time alignment are tied together between them.
Iunderstand you want both sides to have the same level, so that way "sounds good to everybody". But, doing it this way is limiting you from further SQ. Rock suffers the most because there is lots of dynamics, which time alignment and separate L/R level and EQ control is the biggest help to improve that
Even after tuning for one seat, the passenger side will still sound good.