I am uncertain if this has been suggested about slots already or not, but currently in Stake you can rank list of slots in alphabetically, popular or recommended or you can sort them by grouping them under providers.
What i would love to see is the feature to rank them in order of Return to Player (RTP) % or Biggest possible Jackpot. Because sometimes i just want to try my limits of my luck and there are so many slots to check out if i want to do this manually.
When playing, I honestly never check the RTP and play the game with the highest RTP. It's not wrong to see it as an endeavor, because it might just make us win a large amount of money. But for me, I'm not interested in seeing that. It's not for nothing, because I used to do the same thing and it never gave me any wins, so I decided to ignore it.
There was one time I played a game with a high RTP, I lost very quickly. And when I played a low RTP game, I won instead.
Everything about slot games very much boils down to luck, whether the RTP be high or low, luck still plays the highest and most important role, playing a slot game with high RTP only means that you stand a better, maybe a very slightly higher chance of winning compared to the slot game with low RTP, but if you do the math and calculations, you will discover that the difference is not always very significant, this is why its still very possible to play a slot game with high RTP and end up not even winning anything at the end of the end, and just on trying out your hands on another slot game with low RTP, you win, it just simply means luck was not on your side the day you play the game with high RTP but had better luck the day you played the one with low RTP.
But still though, i go with what o48o said, it will be absolutely great and very convenient to be able to group or arrange slot games based on their RTP level, like from highest to bottom or from bottom to highest(by bottom, i mean lowest), if you ever wanted to chose a game by this, you will discover that most of the time, its very much time consuming, so if the casino can help arrange this in order that gambler who are interested in choosing a game to play by this standard will just set it by turning a switch or button on or off, it will be very much time saving.