Robin, I agree with everyone else that this is a great idea (and I would even go as low as 2-3 suggested merges to start with).
I just want to pick up an extra point about "giving people an opportunity to "fix" their own issues"
Some of us can go in and do the whole merge ourselves, and although it is tempting to do that, particularly if it involves duplicate profiles we know well, I think the benefits of a new person learning how WikiTree works means we should restrain ourselves, and give them time to fix it themselves.