Pulled the trigger after reading the row count. ROAS improved roughly 30% versus the lookalike audience we ran before. Bought it to support a marylou's locations united states rollout in United States. Acceptable trade-off at this price.
Thanks for flagging the small gaps, the email/LinkedIn coverage you mentioned is on our list for the next pass. If you want the gaps fixed sooner than the next refresh, open a support ticket and we'll spin a one-off pull.