Larger project files and especially those over 500M could benefit from P2P transmission. I suggest you run a tracker and let p2p clients like edonkey broadcast what they have back to your tracker when they are seeding. It's secure in that the md5 hash of the original must match what is being sent in P2P. Your sponsors may even host a few trackers as it saves bandwidth and disk usage.
I really hope that this feature is implemented
Related feature request:
https://sourceforge.net/p/forge/feature-requests/311/