@Risewild,
I understand what you are saying, however, New Vegas does have 4 mailbox already in the game. These mailbox do help alot, however there was none in Fo3, which makes getting through with 200 weights a pain to carry until level 8, the truth is vanilla fo3 makes you need a house to carry loot, which makes fast travel to megaton over 20 times. I'm not saying I need to rely on Interior Projects to play TTW, however I do need Interior Project optional Mojave and pony express to put the 4 mailbox in DC.