Showing the min/max constraints makes sense to me for the Kanban boards in Jira.
However, I wonder about the value of showing the Issue Count with the column name. Unless the team has lots of work in progress, teams could tell at a glance when they are within the constraints. The only way I can see to remove the issue count is to disable the constraints...defeating the purpose of tracking for WIP issues.
How can the issue count be removed from a column *and* still show the constraints?