Hello Tac,
Thanks for reaching out to us.
You can configure the fees of Community Tickets to either be a onetime fee, or onetime + % of ticket.
However, it can not change based on who the organizer is. This might be possible via some custom coding.
Unfortunately we cannot help you in custom developments, but I can share with you a list of guys who might be able to help you and are not affiliated with us:
https://theeventscalendar.com/knowledgebase/find-a-customizer/
Let me know if this is of any help.
Cheers,
Andras