We prove that for each nonseparable and reflexive Banach space (X, vertical bar vertical bar . vertical bar vertical bar(X)) with the nonstrict Opial and Kadec-Klee properties, there exists an equivalent norm vertical bar vertical bar. vertical bar vertical bar(0) such that the Banach space (X, vertical bar vertical bar . vertical bar vertical bar(0)) is LUR and contains a diametrically complete set with empty interior.