I don't much care about the rewards/bonuses of casino's and am sure for any gambling site to have enjoyed a long age then it must have a good reputation hence the strong community.
Another two factors are the method of payment and KYCA, every gambler would support a fast payment system of any amount won and for KYC I don't support gambling site that claims not to have KYC policy for I feel my account ain't really safe security-wise against impersonation. I take priority to these few features in any site before others.
Although that adds fun when we gamble and that's the encouragement that some gamblers are getting because of the bonuses that casinos do offer. But yeah, it can be one of the last priorities of someone who's rating the casinos based on the features that we want. However, the more active these casinos engage with their communities through bonuses, they're also more likely to gain gamblers through it. As far as everybody's concerned, KYC as the main priority that everyone is looking at. Anyway, it becomes ignored when the casino seems good enough to be trusted by most of its gamblers. But since the poll is made and we're various gamblers in here, we do have our own preferred features and it's good to see that there's a variety of it.