Please add a capability to quick insert image attachments
It will be nice to insert image attachment via Ctrl+V.
Adding a new file (with any picture) attachment takes a lot of time - you need to save image, click upload, find the image and only listed steps are completed image will be available.
Process user's Ctrl+V in attachments tab (make it some like <div contenteditable='true' or any other approach) and if user have inserted an image - save image to server and add to the list of attachments. It will greatly reduce the time, required to insert an image.
As I understand one of the most popular cases of using Attachments is adding some graphic data (e.g. UI sketchs from UI designer, relation schemes from lead developers etc).
This features is not hard to implement since modern browsers work with clipboard data and have good API.