So far, based on the poll results, in almost every category the current model is the most popular option, but this is a big outlier: most people don't care about whether 1.23 clients are represented at all, but among people who do care, more people want them represented than not.

Why? This should not have been useful information since 2013. The only things that 1.23 and 1.24 clients should experience differently are ambient sound events and MCEs, but in both cases, 1.23 clients probably have the better experience, since I suspect most levels with ambient sound events or MCEs are designed for 1.23, not 1.24. (Also they're probably SP levels.) Is there some underlying, unreported issue that makes it useful to know who's a 1.23 client? What is that?