I was opposing the first version of this proposal, where conflicting objects were silently and instantly removed.
The new version seems to resolve these concerns - and 7-day notification should be fine.
But I'm not sure if all objects have optional 'notify' field (and a brief check showed that there are some without this field, I don't have exact numbers at the moment). If there is the technical opportunity I would suggest to also use notify field (and may be other contacts)
from the related maintainer object.