Why have a ladder at all
Without one, a punishment depends on who answered the ticket. The same VDM is a warning from one moderator and a three-day ban from another, the player notices, and the argument is no longer about what they did. A ladder makes the second offence cost the same whoever is on shift.
It also makes appeals quicker to decide. “This was your third VDM in a month, and the third is a three-day ban” is a sentence anybody on the team can stand behind, and one a player can see coming.
Lenient, standard or strict
Standard is the shape most servers settle on: a warning, a kick, then bans that roughly double — a day, three days, a week — before a permanent ban for the moderate offences that keep happening. Serious offences start at a ban.
Lenient adds a word from staff or a second warning at the bottom, which suits a whitelisted server where everybody was vetted and a mistake is usually a mistake. Strict starts every offence a rung higher and reaches a permanent ban sooner, which suits a public server where most rule breakers are passing through.
Ban lengths that mean something
A ban shorter than a day is often slept through, so most ladders start their bans at one day. After that, doubling — one, three, seven, fourteen, thirty — keeps each step a real step up without a jump from a day to a month.
Write the ban lengths down as days rather than “a short ban”, and use the same lengths across offences. Five offences with five different sets of numbers is a ladder nobody remembers.
A ladder needs a memory
A ladder only works if whoever is on shift can see what a player has already had: the second offence is only the second if somebody knows about the first. That means one record per player, kept whether they come back or not, with every warning, kick and ban on it and who gave each one.
Without that record, a ladder is a spreadsheet nobody updates and a staff channel nobody can search.