The phrase "heightened the importance" is grammatically correct and can be used in written English.
It means to make something more significant or of greater importance. Example: The pandemic has heightened the importance of personal hygiene and cleanliness.
But the short schedule heightened the importance of every game.
Two parallel trends have heightened the importance and prevalence of such inequalities.
He said the shortened schedule heightened the importance of every game.
Federal policies that have restricted the science have heightened the importance of the issue for Wisconsin and other states.
His injury, albeit minor, heightened the importance of acquiring a proven forward to provide cover and perhaps start in cases like this.
All these events have added to the tensions of a country on edge and heightened the importance of security and racial issues in the choice of a president.
Medicaid plays an important role in caring for high-need, high-cost (HNHC) patients, heightening the importance of identifying strategies and interventions to control costs while providing needed services to beneficiaries [8, 9].
This heightens the importance of understanding interactions between shallow and deep hydrologic systems when characterizing CO2 storage projects.
So a diagnosis of cancer may heighten the importance of trust but, otherwise, does trusting your doctor really matter?
But the move to protect city centre spaces for commercial use also heightens the importance of ensuring that the new homes London so urgently needs are built elsewhere in the city.
In a telephone interview, Mr. Daisey said that the death of Mr. Jobs "is of such importance that it absolutely has to be addressed because it heightens the importance of talking about his legacy".
