The only issue with having more links pointing to an inner page rather than your home page is that your inner page can outrank the home page in Google (and others) for a particular keyword. But who really cares? Isn’t it more important to get people to your site rather than worry about which landing page is best. If you have more people coming in from another page (check your webstats to find out) then just make sure you focus on making that page strong enough for a user to convert.
You really should be thinking about every page on your website as a potential landing page since the unique content on that page will draw in traffic anyway, which is why everyone says content is so important. The more content, the more visibility in the search engines, the more traffic.