Complex design is often read as a sign of a serious brand, but in practice it just dilutes attention. Fewer elements means a clearer hierarchy, and visitors grasp what's being asked of them faster.
Minimalism doesn't mean an empty page - it means every element earns its place. An extra icon or a third banner pulls focus away from the one action the visitor is supposed to take.
Across our projects, removing clutter usually lifts conversion more than adding new features does - simply because the path to the button gets shorter.