The decentralized reputation system will run into political issues if the ratings are not completely private.
Also, I believe everything else in the roadmap is much more critical to hive for the next 1 to 2 years. And as always, things will require more time than they should.
Ratings are planned to be a mix of public and private information.
Software timelines are always difficult to set. But the things planned for HF25 are easily achievable in 6 months I think. The other features don't have set deadlines, so we just do the best we can.