Status: OUT
The recursive subsystem's bidirectional processing (NullIterator-enabled traversal + Chain-of-Responsibility routing) combined with Flyweight's proven extreme-scale efficiency (180K characters to 480 objects) achieves safe extreme-scale operation — but only while Composite's transparency-safety tradeoff is resolved, since at extreme scale the inability to type-restrict children amplifies structural integrity risks.
Extreme-scale recursive subsystem operation compounds the transparency-safety risk with the type-restriction gap
Depends on (SL): recursive-subsystem-bidirectionally-engineered, composite-flyweight-scalable-trees
Unless: composite-transparency-vs-safety-tradeoff, composite-cannot-restrict-children-via-types