Accepted ideas of "suitability" assume a certain uniformity of period or style and favor respectful references to existing cornice lines and the replication of material and scale for a largely illusory connection between old and new.

WSJ: Cooper Union's New Building, at 41 Cooper Square | By WSJ Architecture Critic Ada Louis Huxtable

The pilasters culminate in simple Doric capitals, and Doric moldings animate both entablature and pediment, while also carrying the cornice around the building and tightly tying its major blocks together.

WSJ: Prim Grandeur, Elegant Geometries | Charles Bulfinch | Lancaster Meetinghouse | By John Wilmerding