I attended a 2035 workshop last fall. It has a few problems for me. The focus seems to be on how, not why. It is a top down approach trying to be a bottom up approach.
It seems to ignore the reality that many congregations are primarily concerned about themselves. Just as many people are choosing not to have children, revealing a lack of interest in leaving a legacy, many congregations have too many members who have little interest in working for a church that will exist after they die.
We have three churches in our cooperative that seem to be doing better than the others. The French congregation has leaders interested in growth, and they are growing slowly.
Another congregation sold their building to focus on ministry.
The third congregation has a big breakfast after it's 9:00 service, and has added two young men to its community who do not eat breakfast but visit. The doctor even took a confirmation course and formally joined, partly for the community and conversations.
For 2035 to work, congregations need members who deeply care about people who are not part of the community.