The AOD functionality hasn’t changed at all - it still is very minimal and essentially just recreates a simplified image of your lockscreen.
Since there are two new clock styles, these also apply for the AOD. There is a total of eight different styles available now, seven digital and one analog.
You can insert images for the lockscreen by using the photo widget, either the square of the circular one: Just insert them and select just a specfic image you’d line to display - now you’ve got an image on your AOD. It might not be exactly what people like to see, but as kind of a workaround, it’s a possible solution.
Personally I like the reworked status bar icons, however due to the design and sorting it indeed looks like the spacing is off. If they’d change the sorting by placing cellular reception first, wifi second and battery third, that spacing IMHO should already sort itself out. Due to the design of the wifi and cellular symbols, the space appears to be larger than it actually is.