The font used on the new look for MSE is so small compared to the one used on MSO that it almost seems an error:
Was this miniaturization accidental, or did you actually intend to make us squint at MSE now? 👓
Also, because the pale blue provides far less contrast than the dark grey, it becomes even harder to read at small font sizes, raising serious issues of accessibility.
My guess is that this is just a temporary place-holder, and that something more readable will appear by and by. Is it?