Genesis
I reread Shape Up again. Since I am impressed with the Event Modeling approach and have been playing with it quite a lot recently, I wonder whether the two could indeed be a match made in heaven when it comes to developing software. Shaping work for six weeks with Event Modeling sounds like a pretty good idea. Event Modeling helps during Shaping, while Breadboarding helps define the UI for the Event Model.
Consider the practical application of this approach in building, let's say, a virtual reality platform. Imagine splitting the flow into six equal-length slices, each representing a significant step towards the successful genesis of your own virtual world. Events like SkyCreated, LightCreated, or SeasCreated could be assigned to one slice each, culminating in Shape Up's cool-off phase as the seventh slice, where you can rest from all the hard work.
Usually, when following the Shape Up approach, you would be working in small teams of two (three at most), one designer and one developer, but let's say you are alone in your endeavor and are a truly intelligent designer with impressive building skills as well. You might even manage the initial creation of the platform on your own. Before you start, though, you might consider the operations of your platform afterward and how much effort it requires. The “You built it, you run it” approach might be exhausting in the long run, even if you are pretty convinced of your abilities. If, at some point later on, you do reach a point where you feel like there is no meaningful way forward, and the only option you are left with is to take the platform down, make sure to do it properly. You don't want to leave it running in the background as a daemon process.
p.s. Both of these are very much worth looking into :
https://basecamp.com/shapeup
https://eventmodeling.org