I like the existing DR because it's a lot more freeform, but I can see the benefit of having a TDM. That can make it more structured, and give you prompts in case you're not sure what to do. Since the DR doesn't get a ton of use as it is, then perhaps a TDM would be the way to go. That being said, I think giving an option for freeform posts on the TDM, along with specific prompts, would be a great compromise.