When skipping the Filter->Sargable transformation, the optimizer doesn't generate partial schema requirements, and consequently doesn't call 
PartialSchemaReqLowerTransport which in turn would call consolidateEqDisjunctions(). As a result not all disjunctions are consolidated into a single eqMember. This task should:

• Rewrite disjunctions of the form: {$or: [ {a: 1}

  , {a: 2}, {b: 3}]} into eqMember.

• Consolidate eqMember on the same field into one eqMember.
• Remove duplicate members.

The potential performance benefit of this rewrite should come from:

• potentially removing duplicate disjunctions
• reducing the size of the SBE plan, and using a single traverseF with a single isMember instead of multiple traverseF for each equality.

This rewrite could be done as part of a more general simplification.