Hi Dan!
I use TDL not just for Time-Management-related things, bit also as a a tracker, journal, and structured notes program.
In this regard I felt a need to be able to associate an image (jpg, bmp, etc.) with a particular "task", in such a way that it would be easily visible from within TDL (for example as another tab in the Comments section). The actual image can be saved as a link to a file, or an actually embedded data (first approach would be preferred I guess).
This is distinct from the already existing "File Link" field, since they serve different purposes. It is also distinct from the Icon, since icons are meant as quick visual cues displayed in-line.
So, perhaps you may consider adding this feature in the future version of TDL.
Thank you.