Having more Bittorrent seeds for the ISO downloads available on release
day.  This should make bittorrent a much more attractive download option
for users and should relieve the strain on the regular mirrors.  What
I'd suggest is that some trusted members of the community be set up with
early access to the bittorrent trackers so that they can get a local
copy of the ISOs and can then be seeds for the general public.  This
wouldn't need to be a long-term commitment of resources - perhaps 2-3
days before the release day, and then a week or so after release.

A few more secondary DNS servers for fedoraproject.org.   Again, I'm
sure that trusted members of the community would step up to provide the
secondary DNS servers.  Perhaps DNSSEC should be investigated to make
doubly sure that the DNS data isn't messed with.  Of course, this would
be a long-term committment but shouldn't be very resource-intensive.