I think that'd be a more realistic approach since nerb (don't know about others) are looking to see "ideal" preps with typodont dimensions. in real life, it doesn't always work out that way.
when I assisted last year, the guy I was working with did an ideal prep, sent the patient in with a modification request since there was still decay, the request came back rejected but you know..you have to remove the decay..so he did, sent the patient back in. they failed him because his prep was "overextended buccolingually" and had him temporize.
nevermind that the nerb examiners are all ancient white men who can barely even see.