Technique or method may have been a better choice of words; but that is a "neat trick" > 0.3516 to 0.9844 With what density in the lattice compared to other r

Technique or method may have been a better choice of words; but that is a "neat trick" > 0.3516 to 0.9844 With what density in the lattice compared to other redundancy protocols? Is there a limit to how tightly such CNOT stars can be packed into a lattice? Would you just fab lattices in that shape instead, or should the 2D and 3D lattice layouts change? Would there be value in vortically curving the trace arms (?) of the lattices; is there even more stability in vortices in this application too? If stars work, Are there snowflake or crystal designs that are even more error-free, for 2D layer coding or 3D surface coding? What of this changes in moving to optical qudits, for example?