To be honest, I prefer to trade the altcoin pairs with the ETH and BTC, stable coin pairs are the fastest option for liquidating the altcoin holdings. Binance made the right decision for increasing the liquidity on the main altcoin pairs, only some traders choose the USDC or Tether pairs for trading. The day traders are the main driver of the daily liquidity and removing the less liquid pairs will help them from my experience.
Or perhaps pairs with btc, eth and usd. Those three were enough to pair with altcoins on the exchange and not with so many bunch of other more like ltc, tether or even their token's exchange. Most of the popular coins has like 8-10 pairings which is really the culprit behind it's good liquidity. Binance should have known this and implemented strictly from the start.