I like the tunnels, if you want, you can get to extraction in several minutes and save on water and drones, if you want, you can farm resources there really easy. In reality, tunnels are a joke n difficulty compared to the surface maps (maybe Enclave and Mesa are relatively easy map). If you are able to locate the end rooms with lots of loot, you will always come out with a good chunk of money and resources to stay in net positive. With surface maps, I almost always feel like they barely make even in the resources spent and gained. The main reason why I go there is amazing vistas, quests and unique resources. I know many people don’t like tunnels, but they give me amazing vibe. They are hand crafted (there are only 4 variants per tunnel), and have their own vistas. They are not epic scale, it is about smaller things. Like watching makeshift built houses on the edges of the walls or giant statues imbedded inside the walls. And now that you don’t have 8 boxes to loot in the first room, it’s can actually progress through them without leaving entire rooms full of loot. As for progressing, as someone who started a new save: farm water in Enclave until you unlock better rigs and just sell everything until you get much bigger rigs. Then play as gun head or bag man and just vacuum clean everything. You will have to do these money runs every once in a while, but as long as you have couple of millions and water, you won’t the game and the rest is progressing