I don't think that pushing the bar too high is wise - imagine you "lose" some of the whales due to their innactivity. They will continue autovoting for content the same way they do now, but will not support any proposal / only support the Return Proposal. Getting the DHF funding would then become virtually impossible.
Also, I believe the DHF should be quite inclusive. However, the community needs to start demanding accountability, and tangible outcomes. We shall not support money-wasting. Yet that is up to our own respensibility, I am not a huge fan of creating extra rules and barriers.