Hey, I think it'd be cool if we were able to use the UpdateOneModel for MongoCollection#updateOne, I see this being pretty useful especially if you want to update a nested field based on if the document you're looking for is already there or not, so for one instance you'd use a push but the other you'd use a set one requiring an array filter and the other doesn't. Due to how it handles array filters if the array filter is unused it'll throw an exception, I think this would be a good way to avoid this as you can choose whether to have an array filter depending on the update.