I think this would be an interesting experiment. Instead of deletionist and inclusionist camps throwing around anecdotes, you get a sizeable body of candidates to study, plus it encourages people to think about the process that they want to follow when the period ends and they have a whole pile of articles they want to process efficiently.
The inclusionist camp could of course just obstruct everything.
We'll discover, how often borderline articles gets improved into good ones when left alone, or get made into redirs to existing articles. Some articles might be unfairly speedied, but if they're being tracked from a protected list, I think admins will leave the marginals to accumulate rather than risk being sanctioned for deleting worthwhile material out of hand.
What risk? Admins on RC patrol will be able to delete stuff before anyone else has time to react and digging thourgh the deletion log when you don't have admin powers is imposible and when you do it is insanely boring.