Hi!
So you need a minimum threshold on top of the the one parameter we have?
I am curious what is the use case here 
You can always process this post search. The only downside of this approach is that the objects that will be cut of your post process will be unnecessary sent in the result from the database to the client.
This could be a nice feature request, but it would be interesting to request it with some compelling use cases.
Let me know if this helps!