Our filtering can be improved further if we first see if there are any property/method kind completions and then just use those, then if there aren't return all completions.
  
The reason is that db.test.find({m makes it through this filter and then you get all globals starting with m anyway. But to properly solve it we need more context.
  
ie. if you're after { (ie.  inside an object literal) and you're to the left of a : (or there isn't one) then you probably don't want globals regardless. If you're to the right of a : it is probably fine because you could be using a variable.