60 second promo video

Information for the business: We are a large, established well-being improvement company
Industry: Healthcare
Design details: We'd like a 60-second 2D animation for presentation at conferences, and possibly including on our websites. Although we're a healthcare and technology company behind the scenes, we'd like to promote a very human story/image.
Target audience: Senior executives from health insurance, large employers, and healthcare providers (we're aiming to sell through these executives to their clients - "normal people")
Ideas for the visual style: Naive and human but still very professional
Things to avoid: Looking flippant
Extra notes: Our unique selling points are:
1. >30-year track record in health improvement
2. Scientific, evidence-based approach
3. Proven and trusted, but also highly innovative

The first outing for the video will be a conference in France (thus French voice-over) at the end of August. We'd like to re-use the video with other language voice-overs, so the character should be an "everyman".