Withdrawal fees can be a nightmare. Especially to BTC and ERC-20 Networks even if the actual fees on Ethereum are (temporary) low. Okex's initiative to allow withdrawal of 23 assets (below) to Polygon Network is amazing. Definitely draws attention. I'm patiently waiting for Binance to do the same. BAL, BAT, CEL, COMP, CRV, DAI, ETH, GHST, GUSD, LINK, MKR, PAX, SNX, SUSHI, TUSD, UNI, USDC, USDT, USDK, wBTC, YFI, YFII, ZRX.