This text contemplates the difficulties of French local currencies and the pathways to improvement, in the event of greater sustainability at the local level. After a panorama of the French local currencies , and the observation of a disappointment from a quantity viewpoint, the paper discusses requirements and improvements for a local currency (LC) to contribute to a greater sustainability at the local level. It presents the notion of the relevant territory for a local currency. It then discusses a few crucial points of improvement and the difficulties they face: the role of local governments as major partners; the need for employees in order to constitute a permanent basis for the scheme's activity and development; the need for an digital counterpart of the currency; the need for financing activities. The conditions for a ripple effect are eventually discussed.