SCBlock doesn't have an absolute index; it was only used for tagging in dumps. Offset and Length weren't used.
Removing these 2 ints from the SCBlock object reduces alloc req by 8 bytes each; if we have 2,500 blocks in a save file, this reduces the memory footprint of a sav by 20KB. Nice side effect :D
Remove block dump comment from accessor; new logic in Meta8 for dumping DLC sizes does the same logic with less hassle.