Thank you for your response.
For clarity, would there be a difference in WGs approach for:
1) cards for vessels not released by WG and for which no stats exist in the rulebook;
2) cards for vessels not released by WG and for which stats do exist in the rulebook;
3) cards for vessels released by WG?
See attached pic. These are more a substantial revision of the cards rather than just an attempt to fill in the missing vessels.