At times, we have property definitions which are added to support for dense results right out of the index (e.g. contains(*, 'foo') AND [bar]='baz').
In such cases, the added property definition "might" not be the best one to answer queries which only have the property restriction (eg only [bar]='baz'
There should be a way for property definition to declare this. May be there are cases of some spectrum too - i.e. not only a boolean-usable-or-not, but some kind of scale of how-usable is it.