The phrase "an added importance" is correct and usable in written English.
It can be used when emphasizing the significance of something that has been increased or supplemented.
Example: "The recent findings have given an added importance to our research on climate change."
Alternatives: "an increased significance" or "a greater importance".
Such provisions take on an added importance in the context of declining unionization rates.
Take-up of these schemes has an added importance in that they have the potential to tie a significant portion of funding to Bank rate.
But with their recent struggles, the games this week assume an added importance in maintaining a buffer to avoid a full collapse.
Books in Tunisia are generally published in either the languages of Arabic or French but rarely in English, which gives participation by Columbia University Press an added importance.
At times like these, drummer Jeff Hamilton said, music takes on an added importance.
"This war was so strange," he said, and the families of those who were fighting it had so little support, that the letters took on an added importance.
The stakeout is a journalistic institution, one that takes on added importance in a major world news center like Washington.
But the latest report took on added importance as a potential indicator of efforts by the ruling elite to build a case against Mr. Bo in advance of a turnover in the party's leadership late this year.
Their decades-old struggle takes on added importance in a country in which 50percentt of the population belong to non-Persian minorities and a region in which ethnicity and sectarianism are redrawing borders.
But Mr. McCain's life story — he survived the fire aboard the aircraft carrier Forrestal off Vietnam that killed 134 of his shipmates, was shot down over Hanoi, and endured five and a half years as a prisoner of war — is taking on added importance and seems to have helped him appeal to voters who disagree with him on some issues.
Half a year after North Carolina's change, it took on added importance, because the federal government took a similar step.
