Originally Posted by
tgva8889
The biggest issue with RestoChesto is that it uses up your item slot. On some Pokemon, Leftovers recovery is incredibly important for long-term survivability. On others, having access to power-boosting items is huge. Additionally, because Chesto Berry is gone after a single use, every other Rest on such Pokemon comes with the usual consequences of Rest (barring Recycle or Harvest, which are uncommon options). This is problematic, especially with the new Sleep rules resetting the Sleep Counter every time you switch out. It's possible that once you use Rest again, you are actually just dead weight.