Tbh, both KM and Wrath could've been significantly improved had Owlcat sat down and removed the fat while acting as a competent DM where it's needed. They decided, instead, to dedicate untold amounts of dev time to extraneous systems that almost nobody likes to engage with even in the tabletop APs. It boggles my mind why they decided to include the two APs that most deviate from a standard RPG adventure. They could've easily adapted Rise of the Runelords, the most widely loved AP Paizo have ever published, and it would've turned out way better. I certainly don't think Rise of the Runelords is the best AP, but its flaws are both well known and the community are more than willing to overlook them considering the praise it gets. Owlcat could've slightly improved those bits too and it would've been great.
If I were them, my first choice for adaptation would've been Rise of the Runelords just because it's so popular and beloved, but my second choice would be Shattered Star. Since SS is a sort of "soft sequel" to Rise of the Runelords, it would've been pretty appropriate for a second game.