Group Booking Pre-populate Member and Billing Data

Currently an Individual booking can be set to populate all data from the user profile in whatever membership database is used (if compatible with Event Booking - eg Membership Pro or CB, etc).
In the case of Group Booking currently this is not possible, although it is possible to roll forward data from previous bookings (set as a configuration option) and to populate Billing Data based on either first or last group member.
In our case: if a system user makes a group booking they will always be the first member of their group - they would never book a group and not be present themselves. Also the member making the booking would always be the person being billed.
Please may you add the following options:
1. Populate Group Member 1 based on Membership Database for the user making the booking (overriding data from previous bookings)
2. Populate Billing Data based on Membership database for the user making the booking (overwriting data from previous bookings).
This will save users having to re-input their data AND encourage them to maintain the data in their membership profile, rather than simply updating the booking form.
As this is already done in the case of Individual Bookings, I hope it should be easy to achieve based on existing code.

If, as you are already establishing, Group Member 1 in group Bookings is the main system user (person doing the booking), some data fields that might apply to other group members might not apply to that person.
For example, where the users are all required to be adults, but allowed to bring children as guests to events, it would be useful to have a 'child rate' option, specified as a custom field for all group members, but this would not apply to group member 1.
Another example might be security vetting, where Member 1 (the host) would be assumed aready to have been vetted.
You already give the option for custom fields to display ONLY for Member 1, or for ALL Members.
Please may you add an option to EXCLUDE displaying the field for Member 1 - ie this field applies to guests only.
Thank you.