Actually one of the features recently i saw on another DEX was:
Have a timer safeguard (First 3 hours) with a limit on how much a person can buy in the first 3 hours for any ICO / IDO that gets listed on our DEX.
To prevent bots from buying out the liquidity when the ICO / IDO goes live.
In April, there was a popular IDO called Refinable Coin by HK Team, invested by Mr Beast and Binance. When their ICO / IDO went live on PanCakeSwap, 2 bots managed to buy at least 95% of the whole liquidity in the first 2 trades and then dumped back in the next 1 second at like x1000 jump since they bought 95% of the liquidity and there was a huge difference in BNB/Refinable pairing which resulted in price surge, all within 1 second.
Bots are able to get in first since it is a bot.
To prevent this, i saw a few DEXes implemented a timer + a limit on how much a person can buy in the first 3 hours for fair buy.
For the first 3 hours, each address can only purchase XXX amount.
Similar to how Pundi X did their ICO back then, there was a limit on how much a person can purchase although back then, only the whitelisted ones can buy.
But of course, this only applies if FX DEX will include letting other companies do ICO / IDO / IFO on our DEX in the future.