Thread:Template talk:Extension/Add predessesor and sussessor/reply

I do not think this is useful at all. If there is a newer version with a new name both pages should be merged and the new name rectified. If it is a fork then you do not have a successor predecessor relation. If the old extension was abandoned is should be properly archived providing the pointer to the succeeding extension. If the old extension was abandoned there is no point in pointing to it from any page.