I'm not in favour of any moves which would take Defraggler in the direction of being a PerfectDisk or DiskKeeper clone - strategic file placement, offline defrag, real-time defrag and so on. The beauty of Defraggler is that it is a small, resource-light program that performs a specific function superbly well - homing in on just the fragmented files. In my view, once the GUI has been more or less perfected, little further development will be needed.