I think you are correct about drugs— unfortunately. There is massive public support for legalization.
I think it is bad but probably would not hurt the nation as much as continued democratic rule.
I also think small scale but vivid ideas like the parks would probably work well.
I would also add a notion that federal subsidies have to be paid back. That could be done experimentally to an entire range of federal activities.
I believe we need to get people thinking differently. One thing that is clear centralization has not worked better than when the states were managing things themselves. Centralization just masks and spreads problems around while those in DC get to take a cut. Simplification and de-federalization works. It provides left leaning states the freedom to govern how they wish and conservative states to govern how they wish and the money conveyer belt ends. Most states already get nearly as much as they give to the federal government back in federal funds. Let’s cut out the middle man of DC. If we can get some good examples proving that de-federalization saves money and serves the public better then it can be used in more aggressive ways. Maybe deconstruct social security and Medicaid into independent state run entities. A long term strategy but I believe it work. The problem we have had as conservatives is being forced into an all or nothing approach with maximum perceived risk to those dependent on government programs.