I actually like the idea that if a proxy delegate gets voted in it starts messing things up. This means that it can be used as a form of digital protest, if a large group of stakeholders feel they are being seriously mistreated. Obviously if it is not an issue that is very controversial then the supporters would never actually let it become a real delegate because they would be hurting their own investment. If both a yes proxy and a no proxy end up being really close to getting voted in, then that can serve as a signal that a "referendum" is needed with all stakeholders being pushed a notification asking them to vote on the issue through the hard fork voting system.
I think this is just getting messy. The idea of breaking the system could inhibit stakeholders from voting. Then you have to worry about some stake still voting for the dummy delegate even after the resolution, instead of voting for real delegates. Whoever sets up the delegate will start getting the inflation BTS after the hard fork... there is probably even more messy consequences neither of us can see.
I do not think we should pollute the Delegate voting space, as it may be difficult to clean up after ourselves completely.
No one would ever vote for a proxy delegate with a pay rate above 0. Anyway this is most definitely a hack, but I think it will do fine until more sophisticated methods are created (which I suspect won't be trivial to implement and get people to use).
One thing I think it would be really great to have implemented ASAP would be a reddit style forum where people upvote and downvote with their stake (that they register by completing a cryptographic challenge at account creation or after). This would allow us to measure support for pretty much anything, even tiny issues, and it would make it easy for people to rapidly make many small variations of the same proposal/concept/idea and have stakeholders be able to conveniently rate all of them.
The only important thing to remember with such a system is that the stake voting on posts and comments should only be done for "business things". If the platform is used for social communication or link sharing then that functionality should be clearly segregated into a separate system where voting is more like traditional reddit (perhaps with advanced individual filtering features), but stake should never have a say in controlling what kind of social/cultural expression the community presents to itself and others.