My first character in Fallout was a general bad-ass money hoarder. Anything worth some value simply had to be mine, one way or another. Including blood packs which were found in nearly every first aid kit and were bought for considerably more from Vance than from any merchant in the Wasteland. I found it tedious to have to run in and out of those same, boring tunnels every time I had blood packs. So this mod was born.
In this mod, I've made a metro station entrance leading to the Meresti Metro Station (where The Family headquarters are) near Arefu. To avoid making the quest Blood Ties unbalanced, I've made it locked via key with no key to unlock it in the wasteland. The only way to unlock the gate is to have gone through the Meresti tunnels and gained entrance to the Meresti Metro Station from there. Once the Meresti Metro Station is entered from the vanilla entrance you will activate a trigger that unlocks the door and it is now available for use. The entrance I created is located to the right of where Ian is being held in isolation (I've cleared the rubble to make it fit in with the destroyed Metro Station, see screenshots).
[Installation]
Drag the file into your data folder and activate it using FOMM or FalloutLauncher.
[To Modders]
Use this however you want, just give credit where credit is due.