Yep! It turns out bringing the root online (and having all the necessary people present) is only one part of the work involved in signing new intermediates. The other part is writing, and testing, the detailed script of the ceremony, and preparing all the relevant software. We had an urgent need to generate the LEAX3(ISRG Root X1) and LEAX4(ISRG Root X1) signatures due to root program requirements, and decided that it was more urgent to get those done sooner, rather than to delay the ceremony and do the extra work for an EC root and intermediates.