I'm a bit affected by high tx fees. i don't gamble frequently, so i'm fine! though we do need some solution for high tx fee and just segwit isn't gonna do, we also need lightning network or an alternative. but as you said we/casino/other sites/services need to start using segwit address, it's the first step.
The days of bitcoin faucets being profitable or even worth the time are long gone I think. I've never been a fan of them because the rewards are usually measly but requires a lot of time to keep clicking for claims. Although it is worth noting that it's free and if one is patient with it over 6 months to a year, you might just be able collect a few thousand sats which in turn may be worth a considerable amount as the price of bitcoin keeps increasing.
To answer the question with a simple answer, Id Say bitcoin faucets aren't useful now. Perhaps altcoins faucets might be a better bet.
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