World Map:
I think the world map should be huge like half of the U.S. Instead of taking half a real-world day to travel between two towns the game world would be divided into section so when you reach the edge of a section it just shows a view of the wasteland and goes to a loading sceen.
Vehicals:
You can get vehicals from certian groups with the mechanical knowladge like the BoS. Of course vehical are there to make travel between towns faster and are meant for whats left of the roads. Some vehicals can handel off road thus they can be used for exploring.Depending on the vehical it can only hold 4-5 players in it.You can use the trunk to store weapons and supllies, or if there's room in the back seats. Vehicals need fuel so if you plan on traveling with a vehical the game will not let you leave the section without enough gas. Gas can be bought from certian town.In the next section I will tell which one has gas.
Towns:
There are certian typs of town.
* Miner settlements-These settlement are the main reason vehicals can be used. They will most of the time sell gas to the sorrounding settlements, but some miner town will keep the gas and will be the only place to get gas from the section.
* Small town-These are your average newly formed town they may or may not be racist to some of the other playable races.If the miner town in the sector sells gas to other towns you can get gas here although it may be a bit more expensive or limted than other towns.They only have the basics and nothing really fancy.
* Non-Faction city-These type of town are free from any of the factions rule.They have a bigger selction than small towns but not as big as faction-controled towns.Thier gas prices are always the lowest if the miner town sells any.
* Faction-controled citys- These towns belong to a certian faction. They have a mid to high gas price and have the biggest variarty of supllies, but thier supllies are limited to what the faction mostly uses.
* Survivalist Mode: There are some who would like a survival mode and some who would like to play without it. There can be some severs that support the feature and some that doesn't. In survivalist mode the player would need to eat and drink regularly.