For me personally, maybe if there was an alternative stable coin deposit option like BUSD, this would be very helpful, considering fees on the BSC network is fast and cheaper than TRC20.
I am even personally more inclined to bitcoin lightning network for an alternative payment because of more cheap and fast. But of course, there is a need for more high-tech resources to develop the website. On another side, BK8 have a variety of payment right now, so I think it's not necessary to add more of a kind.
It is necessary to add more crypto payment method in order to be more competitive with other casinos and bookies. BK8 is few steps behind in this area compared to other competitors where most other casinos/bookies has more options. Coming up to bitcoin lightning network, I dont think they will add it because it is not popular among bitcoin/crypto gamblers so adding it wont worth the cost. As we all can see, most crypto casinos are not implementing it.