How strong IS the public outcry to replace the toilets? I ask this because most folks I quiz on the topic simply shrug their shoulders and say "its only a one-time inconvenience, anyway" (most people are not 100+ trips up the trail)
I would like to see a few of those folks speak up here.
It is my opinion that people accept the disgusting solution because they see no alternative. I would suspect that people who do the "once-and-done" hike will remember for their entire lives the disgusting experience of rolling-their-own and carrying it in their pack.
It does not need to be that way. There are viable solutions.