Even you will sue the ETH, BTC, or LTC, the withdrawal fee was still the same, it is I think ranging from 6-8$ while BTC is on $10 which is still good enough.
How is $6 - $10 good enough? It is unacceptable in my opinion. Some crypto gambling sites charge zero withdrawal fees while some others provide various options(Slow, Fast etc) to bring the fees below $5. Roobet needs to improve in this aspect.
Whales might not mind these fees, but they are part of the minority. The majority of gamblers are small-scale gamblers who have issues with high withdrawal fees.
Most of the casino withdrawal fees are feasible and only betcoin and bitsler have high fees of $8 and $15 but Roobet fees also is high and problem for small gamblers indeed but we can't do anything serious about it until the Roobet team decides to make some changes for players.Using LTC is most preferred among small gamblers due to high fees of eth and btc which are very high during network congestion time period.