Bitcoin transaction fees is starting to get more and more expensive for gamblers to deposit into their account on gambling sites, so I believe the market for altcoins will grow bigger in future on the gambling community, and we can surely expect to see more players wagering with altcoins.
transaction costs are what causes gamblers to find other options to start gambling and of course altcoin is one that can provide transaction fee waivers. and as long as I'm a doge is the best option to gamble