In most speakers theXover is the main weakness in lack of quality
rebuilding it with much higher Xover parts is= to adding 50% more on your speakers in refinement imaging as well as soundstage depth
speakers are built to a price point ,even in Wilson’s, martens, Harbeths and many others. I have been involved with capacitor and resistor upgrades
look at humble homemade hifi capacitor reviews you can see a bit about the grading 15 being the most most are using Solen, or Mundorf cheaper Evo line
even in $20k+ loudspeakers , sad but true. The Dynaudio I rebuilt transformed them $well over $1k in parts but thespeaker is 20% better sounding which is huge
and = to the next more $$ expensive model $50% more monies.