I am left unimpressed and disappointed about Zoro's character development, especially since the timeskip with his character having evolved and matured far far less than his power levels, with Wano having been a huge missed opportunity for his character development as much as his swordmanship and haki.
Even for his power progression and progress toward his dream I find it underwhelming that Zoro is the only character who really shows any interest into becoming the strongest swordsman in the world and to dethrone Mihawk as the WSS, with him having no competitor or rival who shows any interest into beating Mihawk and taking the title for themselves.