I've trawled through the entire thread and now my eyes are sore
. But...
What about an SDK? Yes, an SDK. Some people want it to stay in the USA, some people want other countries, some want a world map. They could start in the USA and release an SDK after releasing a few addon discs. Maybe an 'FO3 - China' disc or seperate cities / towns like 'Tokyo Data Disc', 'Hiroshima Data Disc' and so forth. The SDK could be useable by anybody - unlike those stupid claims by companies that their 'easy to use' mappers sometimes take a rocket science degree to figure out - and therefore anyone could create 'their' home town/city/country [if your really ambitious]. Maybe start with A boat. A single boat. The old FO2 one which would require a lot of NPC help or a lot of time and repair skills to get going again, so you cant just jump in and go across the water to somewhere else straight away, or maybe add it in with the first add-on disc which is the idea I would like better. Getting the boat straight off with the ability to go to different countries, would result in trying to make up an excuse why you cant travel to the rest of the globe. It'd be nice but I'm unsure of wether or not it would ruin the FO setting. Sitting on the fence for now.
Rail transport would rock. But it would have to be limited to certain areas. A few tracks to major areas are useable but a lot of them are ruined. I like the idea of train robbery. It could also trigger a quest with train robbers boarding the train and its your call. Become a raider/robber or save the train and the occupants and become recognised as a goody goody. Or just bail.
Gas masks. They have to be in there. I dont know why they weren't implemented more. Tycho wears one, why doesn't anyone else? I like the idea of the Torso, Arms, Legs etc.
Vehicles would be awesome but they must be scarce. Not too scarce but scarce enough as to not ruin the walking through the wastes experience. Maybe a few majro major major huge cities could have hustling bustling vehicles rolling around. Try stealing one. What do you think is going to happen?
Speaking of which I'd like to see consequences for my actions. Not 'got caught stealing, turn everyone hostile'. I mean news spreads fast but not that fricking fast. More like say... I get caught trying to steal a vehicle, so I'm hauled off to jail by the cops for so long.' It could impact your reputation, limit your time frame for certain things [You missed meeting [insert vital NPC name here] and will have to wait until [insert date here] when he/she will return. Bugger.].
I'm still tossing these ideas around and trying to refine them a bit. A lot of awesome ideas have come up in these posts [and some shit ones too but hey]. Any input on any of these subjects is welcome.
0.02c