I know it's just about BTC but how about considering tagging a site with other crypto withdrawal options aside from BTC? Then from there, the users will do the research about the fees.
For example, in Betnomi, the fees are labeled with $50 or more depends on the network congestion. But since there are other supported cryptos there like TRX, DOGE, LTC, that $50 fees can be avoided just by paying around $1-$2 using other cryptos.
NitrogenSports doesn't charge any withdrawal fee once per week. Not bad. But for the following withdrawals on that week, they charged
BTC0.0001.
Not to discriminate but it sucks when Withdrawal fee's on stake doesnt really change no matter what the network condition is. It do remain $10 when the network is just having $2 in maximum.
If I'm not mistaken on Stake, regardless of the current BTC price or current network fee, it will stay on
BTC0.0002 no matter what.