[Marcos]

The cloud system is subject to evolution. The principle behind any cloud system is collection of data that can be used to calculate the reputation of files. At this point it is not safe to flag files with low reputation as bad and we're yet to see if that will ever be possible as such detections would cause FPs on less common files.
Using cloud will reduce the number of scanned files and thus decrease scan times. It will also help ESET optimize existing or new detections for better malware variant coverage and improve scanning of files which take a lot of time to emulate.