To reduce the number of registration related bundles and group those together that form a sensible unit the following might be a reasonable proposal:
MITK_BUILD_org.mitk.gui.qt.deformableregistration
MITK_BUILD_org.mitk.gui.qt.pointbasedregistration
MITK_BUILD_org.mitk.gui.qt.rigidregistration
This would form a bundle which combines MITKs registration capabilities.