Are you saying that you believe the privacy feature is holding STEEM back? Do you believe that STEEM would be worth more today if it has this?
Personally, I do not believe a lack of privacy is a huge issue...at least at the moment. Perhaps it could be a major issue down the road especially if the governments of the world start moving into the banning and over regulating mode.
I understand there are a number of tokens that offer privacy yet some of the highest flyers are without it.
And what would a privacy system like you are talking about implementing mean for the tokens created using SMTs...do they get it too or is it something that they go without?