Are we talking about faculty who already have tenure or are we talking about faculty who are tenure-track? If the latter, I'm sure that low publication rates will take care of themselves; they'll be denied tenure and you'll try again with people who know that "publish or perish" is the rule.
While the problem is somewhat moot for attheuc - who is changing institutions - her department was an active research department, where a common problem is that some faculty hired mainly on their research credentials stop publishing some time (usually many years) after tenure. While the department is seeking a way to make effective use of the faculty member to offset the reduced research output, they would not be interested in hiring someone who is research-inactive from day one.
For a department with a graduate program, research faculty contribute more to the department than the obvious things of adding to the prestige and grant income. They also teach graduate courses, supervise grad students, participate in research seminars and attract visitors. These all contribute to providing a fertile environment for graduate education. Teaching-only faculty do not contribute in this way, and the growing trend in state flagships of hiring such faculty to cover the introductory courses can have a tangible negative impact on the graduate program, especially in smaller departments. - DvF