The reviews provided on your site need to have more indepth into like legitimacy of project, how easy it is to withdraw money etc. Such reviews can help gamblers in choosing the right website. Overall it's a good effort.
And they also have to an overall a good website because there's a lot of competitors out there so it's going to a be a really good thing that they're much better on anything else rather than being good at only one aspect of the business.
I think, one thing that they can add is the actual feedback/review from the players of the site. They can add a tab where anyone can comment or post their feedback. The actual review is sometimes important especially for new players. However, if you are a forum user here, you can easily go to the thread of the gambling site itself and see for yourself about the feedback. But for gamblers outside the forum who happen to encounter their review site, would be nice for them to see actual reviews.