This issue has gotten waaay more views and responses than any other thread here, doesn't conflict with their monetization (in fact, if they lift the restriction and people have to pay SG to recustomize, that's arguably revenue), doesn't require a significant development effort (unlike retranslating everything), doesn't negatively impact anyone in the community, and is clearly requested by more than just a couple of people.
The restriction is also very arbitrary and strangely specific. I originally thought it was a model size / animation thing, but if PSO2 JP can handle taller and shorter characters just fine... Guess that's not it.
If this forum is here to gather player voices and see how many people care about specific issues, I guess I'll add to the number? SEGA, please consider changing the height restriction to match the Japanese version?