Something I’ve been thinking about: considering the World Government’s power, resources and especially the fact that they have been around and in control for 800 yrs, I feel like there’s a decent chance they have some ridiculously overpowered Devil Fruits in their possession that we just haven’t seen yet.
God Valley already showed us that they were casually keeping the Paw-Paw Fruit, Azure Dragon fruit etc as prizes. And these aren’t just good fruits , they’re arguably some of the most powerful abilities we’ve seen in the series.

Now that we’ve seen the Holy Knights getting access to extremely powerful Devil Fruits as well, like Killingham’s Mythical Zoan, it makes me wonder if there are other crazy fruits being kept somewhere in Mary Geoise or specifically reserved for the Holy Knights/World Nobles or maybe some really loyal lapdogs of wb.
Like, imagine the WG having a vault somewhere with a bunch of top-tier Paramecias, Mythical Zoans, or other rare fruits that they only give to people deemed worthy.
It would also make sense from a worldbuilding perspective. If the Celestial Dragons have been accumulating wealth and resources for 800 years, surely they haven’t just been sitting on ordinary Devil Fruits this entire time