The fixed lab is for reading behavior
The standard site lab is best when the user needs to see a small pattern, step it by hand, and connect the result to an article.
That works for gliders, still lifes, oscillators, and compact methuselahs. It becomes cramped for large guns, puffers, breeders, and computation examples.
The advanced board is for scale
An infinite-board viewer lets users pan, zoom, import RLE, export RLE, and jump through large-generation steps. Those are advanced controls, so they belong in a separate module.
This separation keeps the beginner experience clean while giving senior users a real workspace for large pattern demonstrations.
Pattern choice should match intent
Primer, gunstar, infinite glider hotel, breeder, puffer, rake, greyship, and Turing machine examples each serve a different user need: growth, guns, computation, movement, or scale.
The advanced page now exposes these examples as a curated pattern picker instead of hiding them behind the original viewer menu.
Working takeaway
Keep small explanations on pattern pages, then route scale-heavy examples to the advanced infinite-board module.