This feature allows you to make your Main page more useful and comfortable by editing and changing it manually. With the Saved Views feature you can create Filters based on many factors for having them in front of you always.
Adding New View allows you to change the columns of Home page, ex. instead of Name you're able to see the price or vise versa. You can change with Market Cap, Highest Volume, top coins etc.
You're also able to add filters for any saved view editing Property, Condition and Value.
One more advantage is that there is no limitation for the Saved Views.