If you only playing Evolution gaming most of the time to farm your wager. There’s a transaction history feature on there menu tab to track all the amount that you wager for that day and other dates that you play in the casino but if you are playing random games including slots then the tournament counter is the best way to track your wager because it records all the wager made in all of the games in the casino.Crypto Crunch tournament is the best active tournament so far in the casino because it has 300mbtc reward while only few players are competing on the top spot. Even a 30mbtc wager can give you a spot above top 30 with 0.5mbtc reward.
You can also request to the live support for the total volume of your wager per day if you manage to opt in on tournaments when you start your betting session. I do this most of the time to verify my total wager volume to make sure that i qualify for the weekly promo.
I do play other games as well, a historical chart for per user would be a great addition, finding loopholes to figure out how much you wagered doesn't really sound like the ideal way to do this, you could find methods but I would suggest not to, I would suggest that livecasino adds something basically simple at this point because it is so easy and common in all other places.
I believe that it would help them not get any more customers because nobody would come just because they can see their stats, but it would help them keep their own customers happier, and that matters as much as getting new customers because people not leaving would equal to more money too.