This "fix" doesn't fix anything at all as far as the current problems with Voidwatch go.
Reducing the length of the battles? Oooooh yeah that'll be fun when Pil is in a bitchy mood and keeps spamming that shield.
Upping drop rate? Won't help much when the same person keeps getting the same ra/ex item.
Keep drop rates as they are. Give us the option to add to treasure pool, or make the really rare ra/ex stuff a direct drop from the nm, or at the very least do something to stop the same players getting the same damn item over and over.