Differences in my approach to spaced repetition systems

There are already many implementations of a Spaced repetition memory system. Why invest more effort here? Collecting notes on some of the key differences in my approach here to help key myself oriented toward high-order bits.

• Spaced repetition memory systems can be used to develop conceptual understanding (but existing systems and prior research focus almost exclusively on definitions or simple declarative facts)
• Writing good spaced repetition memory prompts is hard; this is a key blocker to useful widespread adoption. System designers mostly ignore this, but that’s like a publishing company ignoring the importance of sentences.
• Spaced repetition memory prompts alone are a poor communications medium, but those problems may be solvable by embedding the mechanics in a richer context (The mnemonic medium gives structure to normally-atomized spaced repetition memory prompts)
• I want to push spaced repetition systems to amplify the most meaningful things you do in life, contra The dominant culture around spaced repetition memory systems is fixated on meaningless goals.
• I view spaced repetition as an instance of a broader category of systems: Spaced repetition systems can be used to program attention
  • see also Unusual applications of spaced repetition memory systems