Alright, since I'm working on the change to allow using PNGs for many custom images rather than needing to customize MAIN.DAT (with the eventual goal of dropping MAIN.DAT altogether, but for a while it'll probably be a somewhat hybridized system, with fonts and animations coming from MAIN.DAT, while the single image type stuff comes from PNGs), I felt this was a good time to work on this change.
I didn't touch the default rank signs (I probably won't; especially now that adding them is simpler, I strongly encourage use of custom ones anyway, but if someone wants to make better default ones, I'll be happy to include them - let me know if you're interested in doing this, so I can give you the more-technical details of them), and didn't modify the config or talismans ones yet apart from adding the proper black borders.
Everything shown in the image is default (including the new default logo), except for the background - default background is the same as its always been, but it's just as modifiable via PNG files.
The new graphics would be automatically applied to any newly built packs, or those recompiled with new versions of the Flexi Toolkit; but like with the music change, it won't retroactively apply to existing NXPs (due in part to that this would mean having to detect whether they use custom images or not - annoying but possible - and whether or not replacing them with newer default ones is suitable, which is probably impossible to detect automatically).