Fast support, instant or rapid withdrawals, and a provably fair system is what I look for in every casino I use. Nobody wants to play on a site that could be rigging the games, especially on a newer site. Support's got to be fast for when an occasional error pops up so that the users don't have a negative experience, and fast withdrawals ensure that customers have a smooth and easy experience too.
I can't agree more with your statement. Customer support is just so important on not to lose some of your customers because of slow support or the lack of it but as i have observed most of the crypto casino i used have excellent support and got no problem with it.