In a previous post, I laid down some initial thinking on a flexible framework that would make it easier to manage the way we move from idea to implementation. I've done a bit more thinking and have refactored the conceptual thinking a bit. It looks like this:

We can create two high-order domains:
These are largely and purely conceptual containers. Note that the User Experience spans these two domains. In each of those domains, we can have classification contexts. Just because I like stating the obvious, these classification containers help to contextualize and organize concrete entities like Goals, Improvements, and Activities.
Following one line, we're going to move from Goal through Value Proposition, through Strategic objectives, and arrive at Solution Activity (Implementation), which may lead back to Value via a Reflexive Context. There are a few things to note:
In general, we want a classification and relational system that can take us from Goal and Objectives (things people and the business want to do) to Solution Activity (the things we as a business decide we need to do)… but we want that to run along a Value pathway and filter it through a Strategic context.
I’m after a system and flexible structure that connects and relates implementation activities, user goals, business objectives, and value propositions such that:
There is much more to work out in this model, but this feels right conceptually.