for games known hashes read-only , or read/write. allow it to poll file list from friends share updates when possible. IE if the games maker in time sets up a BT-Sync updater service one could add a trusted publisher hash. as well allow BT sysnc to see the games updater. IE Everquest /or eq2 , Launchpad.exe or the games elements running. for WSUS OFLINE http://download.wsusoffline.net/ IE detect that its running. as the folders files will undergo changes. as well if the games updater is slow ie FFXI or FFXIV , if newer files exist offer to assist in patching when possible else have BTsync wait till the folders change or detect them as they occur. Push to freenas server ETC. WSUS Offline , re-deploy windows 7 , and do 90++% of patches in 2-3 reboots, and 12 hours less than re-downloading them all. Keeping the large block of patchsets synced from server or laptop for IT repairs for fixing client laptops a plus.