Hello!
How I sayd here http://www.supermariobrosx.org/forums/viewtopic.php?p=100146#p100146, we have the better graphical base for our "PGE Default" pack instead of original SMBX's pack.
This graphics pack available in this configuration package:
Main storage: http://wohlsoft.ru/docs/_configs/SMBX_Redrawn/
and faster mirror: https://drive.google.com/folderview?id=0B3QNPpAJx9HnMnNPbWxoUUp6T00&usp=sharing
What I mean:
This graphical pack contains a lot of unique graphics for blocks, for BGO's, backgrounds, NPC's and hardcoded graphics in the "graphics/common" folder.
When we will mix our drawings of new characters, power-ups, NPC's to replace SMBX's, (and even with using exists talkhaus's NPCs), we can release "PGE Default" pack which will have complete free content without using of copyrighted Nintendo's content.