They could, but I can't imagine there is a lot of demand for an overt Mary Sue/Gary Stu author self insert type setting. Having that setting be anything else would require gm tools to support the setting. Im not hostile to the idea, and even linked to those a couple pages back, but I expect somewhere around around zero chance of ever seeing those kind of things in d&d as long as posts like 311 are the primary concern wotc focuses on when designing such a setting bookMaybe they should just make settings where higher powered PCs make more sense then
@Minigiant I wouldn't say that a design choice that started with 5e and continued in the 5.024 revision makes for a "tradition"


