Aspect-oriented programming (AOP) has been designed to provide a better separation of concerns at development level by modularizing concerns that would otherwise be tangled and scattered across other concerns. Current mainstream AOP techniques separate crosscutting concerns on a syntactic basis whereas a concern is more a semantic matter. Therefore, a different, more semanticoriented, approach to AOP is needed. In this position paper, we investigate the limitations of mainstream AOP techniques, mainly AspectJ, in this regard and highlight the issues that need to be addressed to design semantic-based join point models.