Public information campaign to enfrancise
. --By loudly demanding someone worth voting
Idea is that a vote for none of the above is much more communicative than voting randomly or not voting.
Less susceptible to Balkanization than a write-in campaign. Also more amenable to a national roll-out, since the propaganda is generic.
May generate a deeper exception than a write-in.
update: I now think instant runoff is the way to go.