Dunno how much this could be done, but here's my idea for generic artworks :
Part left : flyer (if found) adjusted left full height (take parent flyer.png if clone.png can't be found, bios flyer.png if both can't be found)
Part right : flyer (if found) adjusted right full height (same, parent or bios if not found)
Over display: A small inner glow black (55%), normal blend mode with a small choke (7%) (rather than a inner shadow which would be decayed, more on left than right), (which could be turned on/off) but better with, imho
Here's the result with a super gem fighter minimix exemple (forced 4:3), with a real scanline effect at 70% (one line 70% black, the other left white)
For that size, inner glow was 24px. Tell me what you think about it...?
Personnaly I would love that
[ATTACHED IMAGE - CLICK FOR FULL SIZE]