Newer audiences come online every day and have their unique preferences, characteristics and interests. As your popularity grows more people hear about your Website and visit it. A redesign might be the answer. Your new target audience might have interests and needs that you can satisfy by adding or modifying content on your Website. Content you've already added to your site might attract new visitors who are potential customers for your other services and products.
Language is a barrier that can be easily overcome.
By translating your content into other languages you can become visible to new customers. Web surfers may suffer handicaps that keep them from experiencing your content. Simple redesign elements may make your site accessible to them. For instance, by intelligently mixing colors of text and background on a site you may be able to reach out to color-blind viewers. By enabling your Website with sound or by avoiding the use of fixed-size fonts you can let people with visual impairment access your content.