OP did a great job on making his own overview in regards to different known online gambling site.
However, there had been a lot of update in Stake. Stake now accepts a lot of different altcoin not just bitcoin in their platform.
And, as of now Stake is considering having sports betting in their platform which I think is great, since most gamblers prefer sports betting aside from casino games.
As time goes by, Stake.com is adding a lot of new features, games, improvements, upgrades, and promotions in their site which makes them one of the fastest growing gaming platform speaking of online gambling.
They recently improved the gaming speed in their website up to 30% to make sure that players will have enjoyable and fast  gambling experience when playing in Stake.