I am afraid I am not able to understand your question. Can you please provide more details about this? Do you want to edit the Image gallery widget templates? What is the functionality you would like to have?
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Sitefinity CMS Ideas&Feedback Portal
and vote to affect the priority of the items