-Disabled dropping if the next clear is scheduled within the next 10 seconds
-This will only function if the timer is set to 16 seconds or more
-You can disabled this from an option in the SK file
-Slightly changed option names

I have considered adding custom items to item whitelist, but in order to keep the skript as light-weight as possible, this will not be added, at least in this update. Looping a large amount of item NBT is dangerous.