One thing that gets overlooked is the seed rotation part. Most casual players probably have no idea they need to change their seeds before they can actually verify anything.
I think casinos could make the whole process a lot simpler. Maybe add a reminder after a session or explain what the nonce and server seed actually mean. Having a verify button is nice, but its not much use if people dont understand what they're checking.
At least Shuffle gives you the option to check things yourself. Would be good to see more casinos doing the same.