San Francisco-based Heat has named former Goodby, Silverstein & Partners associate partner John Elder as the agency’s new president. ... Amsterdam-based agency 180 has expanded its creative department with the hiring of senior copywriter John Knecht, formerly of Goodby, Silverstein & Partners/San Francisco, and senior art director Paul Stechshulte, formerly of Crispin Porter & Bogusky/Miami. ... Taxi has hired Yves Blain as vice president of relationship marketing across all of Taxi’s offices, including Montreal, Toronto, Calgary and New York. Blain was previously vice president of strategic development for FCB Canada. ... Jeff Pryor, founder of Pryor & Associates, has launched Priority, a worldwide marketing and public relations company which will assume all of Pryor & Associates’ clients and contracts. Pryor will serve as chief executive officer of the new company. ... Hollywood-based marketing, advertising and branding agency Creative Domain has named former WB network on-air promotion executive Mark Rivard as director of A-V services for its Interactive Entertainment division. ... Bi-coastal agency Imaginary Forces has named Roxanne Artesona and partner Jeff Bowman of the independent repping firm Roxanne & Co. to handle East Coast sales for the company in the television commercials marketplace. ... Deutsch/N.Y. has promoted account planner Jasmine Dadlani to the position of senior vice president. The agency has also promoted associate creative director James Baldi, assistant controller Brian McManus, group director of traffic and residuals Stacy Schwartz, associate media director Karin Prior, account planner Alan Snitow and account director Heawon Yoo, all to the level of vice president.