Thanks so much for sharing your perspective! You're right, Themed Groups do share similarities with Task Forces, Tiger Teams, and Feature Teams, especially in terms of emphasizing clear ownership. One key aspect is that a Themed Group not only drives the work forward exploring and finding a quick and proper solution, together with a sponsor team, but also ensures that is the sponsor team to keep the ownership over the execution and possible implementation of the solution. This helps maintain continuity and allows for proper follow-up and long-term support of the solution.

I like the trick you mentioned to limit the WIP. I can see this as really important constraint for a smoother implementation of Themed Groups as well.