I am actually working on something like this already - the casinos differ so much that I am working on separate pages with tables comparing for example bitcoin dice casinos, bitcoin crash casinos, bitcoin slots casinos etc. Doing one for all is hard especially when willing to add info such as house edge - casinos using 3rd party games have hundreds of games for example etc. I guess (and hope) the way I am going to do this would still be a nice addition?