>>11587948my vote is for the slightly-taller brick. it seems a lot more reasonable than a thin wafer kids would swallow if they breathed funny around it
Lego probably thinks a slightly taller brick would be "confusing" and lead to people breaking models trying to press things together that now won't fit, if one part is unknowingly a tiny bit taller
so the new slightly-taller brick would need a hollow stud on top? maybe even a hole going through it? (which could be useful in other ways?) or something to visually identify it as different than the regular 1x1 brick