Supportability is similar to serviceability and writing support tools needs its own buzz words like model-driven software design:
Supportability-Driven Software Design
Support-Driven Software Design
Serviceability-Driven Software Design
Requirements, Architecture, Design, Implementation and Improvement
The plural form of radius signifies the fact that there is a plurality of ways how SDLC can be implemented. Improvement is similar to Maintenance.
Paraphrasing "Knowing about knowing about knowing" (Side-box 0.1, Consciousness, David Rose) as "Knowing about knowing about problem solving", I would suggest the following references to raise the level ...