I switched from another site and they had an extensive opening explorer, although very limited and you could only look a few moves deep before you need premium membership. There are some alternative sites like chess 365 although you have to pay for premium access such as analysis of master games and a few other. Your generally look at around 2000-2300 opening. I'm not sure if it is a fiscal issue since this is a fairly underground site but I think it would be a great addition to the site since you can't work on openings. Just a suggestion. if there is a thing I'm missing, that would be kindly appreciated. Thanks for reading.