There are a dozen issues spanning years that ask for this feature and all are incorrectly closed saying that $elemMatch or $ projection operators do this. That is wrong. Examples:
https://jira.mongodb.org/browse/SERVER-828
https://jira.mongodb.org/browse/SERVER-6612
https://jira.mongodb.org/browse/SERVER-7224
https://jira.mongodb.org/browse/SERVER-2238

Many use cases require ALL the matching elements from an array field, not just the first.

I have a collection with documents that look like this:

{{{}}
   entityId: 1,
   events: [
     {eventId: 2, otherData: {,}}
     {eventId: 3, otherData: {,}}
     {eventId: 4, otherData: {,}}
     {eventId: 5, otherData: {,}}
     {eventId: 6, otherData: {}}
]
{{ },{}}
   entityId: 7,
   events: [
     {eventId: 8, otherData: {,}}
     {eventId: 9, otherData: {,}}
     {eventId: 10, otherData: {,}}
     {eventId: 11, otherData: {,}}
     {eventId: 12, otherData: {}}
 ]
{{ }}}

and I'd like to do a query like:

{{collection.find({entityId: {$in: [1, 7]}, 'events.eventId': {$in: [3, 4, 5, 9], {entityId: 1, 'events.$$': 1})}}

which I would expect to return:

{{{}}
   entityId: 1,
   events: [
     {eventId: 3, otherData: {,}}
     {eventId: 4, otherData: {,}}
     {eventId: 5, otherData: {}}
{{   ]}}
},{
   entityId: 7,
   events: [
     {eventId: 9, otherData: {}}
{{ ]}}
}

This can be done with an aggregation, but that is not an acceptable work around for many use cases.

Is there ever going to be such a feature for "find"s?