Math alone with some “real world” electives (finance, accounting, public policy) and a decent allocation of applied math courses, or math plus goverment, would be super-fine for law school or consulting. No one hires undergraduates to “do economics,” and comparatively few people at any level are actual practicing economists. Majoring in economics is really just a way of communicating that you are interested in business and/or finance and you have decent math skills.