Another cool thing would be robbing people at gun point. If you have you weapon out you talk to the NPC and there would be an option that says something like "Give me all your caps, or you wont need them anymore!". This would be an alternative to killing the NPC and taking all of their...
And even after that, you could change your mind and tell the Brotherhood/Enclave about the other group and their bombing plans and there could be a massive fight over Megaton.
Perhaps if the player has attacked the NPC previously they would be more cautious around the player. Such as when the player is around they may look at them more often and draw their weapon.
And Mr. Burke should approch you when you enter town, as the first time I did it I just went down and disarmed the bomb without even thinking about. Even when you do enter the saloon he is just sitting there, so you kinda need to be wanting to do it to even have the option.
Yeah, not sure about this, but using SpeedMult might allow the speed of the character to be changed. Using energy cells is a good idea for sprints, but it should also just increase speed anyway.
Damn, that sucks. Just looked through the GECK and there isnt a reload speed var. Weapons could be made more acurate though, due to the fact that with power armor you can pretty much hold completely still.