Despite substantial progress, several challenges remain in the photocatalytic synthesis of benzothiazoles. Key areas for future research include designing photocatalysts with enhanced efficiency, stability, affordability, broad spectral responsiveness, and recyclability is critical for advancing this field. Addressing the potential contamination of products by metal ions from photocatalysts is particularly important for pharmaceutical applications. Non-metallic dye-and polymer-based photocatalysts may offer promising solutions. Greater clarity is needed regarding the effects of solvents, substituents, and steric factors on reaction yields. Current findings are sometimes inconsistent and require further research. Developing environmentally friendly, photocatalyst-free methods using simple starting materials, such as anilines, thiophenols, and arylnitriles, should be prioritized. The underexplored area of C-S bond formation through electron donor-acceptor (EDA) complex formation is particularly promising. These complexes act as intrinsic light absorbers, enabling photochemical transformations without additional photosensitizers. Exploring such methods remains an open challenge.