I am glad to hear that it is on the radar long term but as far as it creating a higher barrier to entry, I believe this is inaccurate conjecture and I respectfully disagree.  There is a huge underground black market begging for it.  I wish I could have it every time I pay for something on alphabay.  I don't think you give users enough credit for not being too stupid to appreciate it.  Everyone on darknet hates arbitration and multisig.  Just ask.  Vendor rating is everything there.  Dde almost eliminates the need for vendor ratings.