The tooltip widget should have a beforeShow event, which can be used to bind an observable to a locale template, used by the tooltip. While it's already possible to use widgets inside the tooltip, the tooltip is missplaced, since its shown before I'm able to bind the observable (called by show event) to its content.
Here is an implementation of beforeShow from another user on SO: http://stackoverflow.com/questions/23297623/kendo-ui-conditionally-preventing-a-tooltip-from-being-displayed-on-a-grid-cell In this use case, beforeShow is used to cancel display of the tooltip.