Hiya,
I'd suggest my attachment.
I quite like it but a few observations.
The boot logo's should have 'Powered by Ångström' somewhere in it and ideally the www.openpandora.org URL (that covers us and give the Ångström guys a nod, something I am quite insistent we do).
Also, a restriction of psplash is that the progress bar is a fixed rectangle (no rounded corners) and the bar would need to be a separate image (see Ed's example). That is one of the reasons we have kept it quite simple ;).
With that in mind I'll keep Ed's startup screen in the .next stuff for now but don't let this discourage you. The clean and simple aesthetic is rather pleasing.
Thanks,
John