What would i like is to have one account. We would login in the Game MP client and then we could share our account ID with the server by using some kind of function. This would eliminate the need to create account for every server we play on. Plus our password wouldn't be know to anyone except for global Game.MP server. Not to mention that we are never sure how a game server stores our password. We could also use some kind of 2FA system like google one. So our account would be extra secure.

I like this suggestion, but it should be toggleable atleast.
Not every server owner would prefer using global accounts

What I suggest is some kind of a cookie system so we can incorporate a more accurate auto-login system. Todays auto-login system are mostly based around SendClientCheck and GetPlayerIp.

I like this idea

Good idea, but this will just be an overhead for the mod developers - who currently plan on NO monetizing or donations.