I generally support the BRVE.
Something I question about it is what strategy should advocates use to try to get more people on board more or less, and to try to get it implemented.
Let's suppose for example that advocates say to members of the general public, "May we please have a statement of agreement from you for this entire slate of proposed laws?"
Then I for example am going to see that for a single-winner office, the BRVE calls for Score or Approval voting. I think that Score would be an adequate solution and Approval would be a vast improvement over status quo. However, I also think that STAR would be an adequate solution. If I endorse the BRVE, does that mean I am opposing STAR?