Several challenges and obstacles were outlined within this review that will need to be solved in the future for an optimal valorisation of this promising bioresource. Firstly, the use of dried BSG results in a significative carbon footprint (drying) and the use of the wet biomass would be preferable, while keeping in mind the perishability of the latter and the need for particle size reduction. New strategies, especially regarding the obtention of valuable building blocks and their transformation into biopolymers are required to diversify the options in terms of building blocks and platform molecules availability, as well as final polymer properties. The scale up of such chemical upcycling route has seen little interest this far but is paramount for the integration of such valorisation within biorefineries to facilitate higher value valorisation.