We should push the problem of the slice manager trying to group horizontally sliced instances (from GML, etc) and vertically slice them into each property to IInstanceSerializablePartition. Allow IInstanceSerializablePartition to return groups of instances at a time, rather than just one instance, so that the partition implementation is responsible for returning instances that A) can be grouped together B) will all fit in memory together.
We should push the problem of the slice manager trying to group horizontally sliced instances (from GML, etc) and vertically slice them into each property to IInstanceSerializablePartition. Allow IInstanceSerializablePartition to return groups of instances at a time, rather than just one instance, so that the partition implementation is responsible for returning instances that A) can be grouped together B) will all fit in memory together.