Good service is paramount. As long as the betting site offers good service, it grows like a snowball. Positive comments and friend referrals are the most effective advertising.
A good name is hard to find. Because all domains are already taken. Deriving a name like xxxbets will suffice.
Everyone is always after functionality which is very paramount when it comes to gambling. We don't always care about branding but what we tend to see or gain from using a particular product or service. Most of the most trending gambling sites currently that gamblers like to gambler on is as a result of the functionality that is available on the site. This make more crypto gamblers to be attracted to it.