I looked to Naace's ICT KS3 Framework for further inspiration on our project. It is described below:
The Naace ICT Framework provides an audit and planning tool to enable schools to deliver a broad and balanced ICT curriculum and provide a clear progression from EYFS to Key Stage 3. It provides a firm basis for KS4 studies. Whilst some suggestions are given about fleshing out the framework and about approaches to teaching and learning, there is sufficient flexibility and choice for a school to develop and personalise the curriculum so that it best meets the needs of their learners within their local context.
This framework I feel really relates to the clients brief - and is most related to the Micro:bit!
The 3 core foundations of the framework are seen below