Improving on Helvetica:

In 1980, Team’77 (consisting of André Gürtler, Erich Gschwind and Christian Mengelt) set out to “correct” common issues found in the grotesk typefaces at the time, including Helvetica.

The Haas type foundry, birthplace of Helvetica (originally Neue Grotesk), contracted Gürtler and Team’77 to audit the Helvetica typeface and reissue an improved version.