What are you communicating?
Every page of your website has a reason for existence. It has something to communicate. It has a job to do. So what is that job?
If you sell products, can a customer tell from the first page what you sell? If not, you're already in peril. The main page is for the customer. There should be a clear path to your products or services and immediately recognizable resources that they can explore to learn more about you and your business.
Let’s break all this down into chunks.
What elements are important for your website?