I would say features are more important, a token with no utility or reason to exist has its price based solely on speculation, which I would guess makes volatility worse.
On other hand, if a casino token has actual use case then people will have legitimate reasons to buy it, hold it or stake it, beyond speculation.

It may not be a completely suitable example, but Monero (as altcoin) as a clear mission and use case: privacy, this being the reason many people buy it and not only for speculation or trading. In the end, if utility is good, the demand will increase and later the price will follow.