Removed Indexes cbIncludeAll and isOriginal from CollectionVersionBlocks table. Since they are only going to have a cardinality of 1 or 2 (or maybe some other really low number) we're not going to get anything out of them. Especially since from what I can tell these are nearly always being used with another much higher cardinality index and are a part of a where clause

Removed the CollectionVersionBlocks.cIDcvID index because it was already being encompassed by the primary key

Changed index CollectionVersionBlocks.bID to be a composite index that potentially gets used if you change a lot of blocks across versions of a collection