Sometimes I understand why many people play in sites where they are very big and get few benefits, the reason is simple, first of all the security offered by the site, this is thanks to its reputation and trust, also in the big casinos they are proud when players win certain amounts, at least when that happens the sites publish it, such is the case of stake.com, bitcasino.io, sportsbet.io, among others, and they do not mind having few profits if they play on these platforms because they know they are playing where the best play and win, I think this is what influences the players the most.
There is definitely a reputation among players in different casinos. When you are not rich enough to be at the top of stake, you search for another place, obviously you need to be rich for everywhere but you need to be rich even a lot more for certain places. This means there are "famous big wagerers" of each casino and that gains them some reputation. They can go about saying "I am third most wagered person in rollbit" and allows them to basically provide something even bigger for themselves in the later stages. It also allows them to get published like you said, gains them a lot of popularity and they can act like influencers.
Yes, it is also a great point of view, whenever we see players or influential people in some way it attracts the attention of many, it is something normal, I think it can also be a great marketing strategy, and since the greatest probability of success is there .
I agree to your opinion, the coins for deposit and withdrawal are just fine, but if the team would like it, and maybe if there are bunch of users that request an specific coin, probably Rollbit can just add it if they like it. The current deposit/withdrawal method offered on site are BTC, ETH, LTC, and SOL.
Well, there is something I would like to add, of all the cryptocurrencies it would not be bad if they put Monero, because for me it makes great sense to put it, in a case where most cryptocurrencies die only Bitcoin, ETH and Monero would survive, the simple fact that privacy and anonymity is something that is highly sought after by everyone, and in the future people will only seek to be more anonymous and not leave traces of what they do, it would not seem so bad if they added monero.