I would like the ability to specify a billing project for BigQuery as part of run options. Currently, data queried from BigQuery is associated to the project from which a Dataprep flow is run with no way to change it. For customers we work with in a multi-project environment, they need the flexibility to align queries to specific projects for purposes of cost and usage attribution.
Additionally, for customers on flat-rate BigQuery pricing, a selectable billing project will allow users to move queries to projects under different reservations for workload balancing and/or performance tuning.