I just finished and I must say I really enjoyed it, though I agree that the ending was lacking. How much more work would it have been to tack on a few 'outcomes' for major areas, or characters, depending on how you interacted with them? I saved before ending so I can go back and finish up the Nuka Cola Challenge, and find a couple more Bobbleheads, or just run around the wastes before trying the game again, but evil this time.

Here is a pic of my dog, my mutant, my annoying butler, my Bobbleheads and the comfy chair where i was compelled to sit before i exited the game every night! OCD ftw

