Allow for the different clauses in $or & $in queries to limit their respective result sets.

I.E. something like

find ( { a : {$in : [ val1, val2, val3, val4, val5] } }).limit(5)

should allow me to have an option to get 5 results back for each value in the array. and then maybe set a hard limit of 25 to cap my total resultSet.