Hi @neurolabusc,
I will look for example datasets, but yes that is what I was proposing. Now that you mention it, I believe the validator will throw errors if any _dwi file is not accompanied by bval/bvecs, which do not really apply to a TRACE/ADC image. So I guess you could include a bval/bvec with a single b0 volume to keep it BIDS valid, but that feels a little silly.
Best,
Steven