Liquidity locked should be over 1year, for a serious project and liquidity shouldn’t be majorly on one address. Longevity requires more strict measures right? 3. Token Holders distribution: if one wallet or few wallets are holding some good percentage of the token,

It’s a red flag. or or solscan can show the holders ratio. If a wallet is holding 50% of the token, be sure he can drop the price to the lowest if decide to dump it on everyone.
Like dis the picture below, a wallet is holding 98%. If it’s a burn address, then it’s safe cos no one has access to a burn address right? But if it’s a normal dev wallet, know it’s a red flag.
4. Minting Authority: for most tokens, it’s advised that the mint authority of the token should be revoked, if not dev will keep minting new tokens and dump them on retail investors. Most projects that have rugged used this technique because most people do not pay attention to this
Since most investors are not developers so how would they know if mint authority is revoked?? Mint authority revoke is a command in the smart contract, probably dev should be able to read a contract and inform you whether or not it’s revoked.
Most tokens that don’t have a max supply when you check them on CoinGecko do not have mint authority revoked.
Some tokens have these conditions and might still be doing well, it all depends on de team. Nothing here makes a token a rug until it actually a rug. Stay safe and do not take this as financial advice still. You take responsibility for your own actions.