I thought it looked cool. Yeah it was a little small but hey, it WAS over 200 yrs old. and i agree that it should have leveled springvale and the school. Ah, well. There's always New Vegas!
And I hate Moira Brown as well. When i went back and found she had survived, I felt like I'd blown it up for NOTHING! Killed her annoying ass, then posed over the body like a big game hunter.
That doen't make any sense, it shouldn't matter how old it is, nuclear dacay doens't invoke a corresponding drop in blastyield over time, the bomb just works or it doesn't. And if it does, i won't matter how old it is, it wil simply create the same destruction and devastation it would have if it were detonated directly after it's construction. Nuclear bombs, both fission and fusion, are all detonated the same way, namely by detonating a series of explosives carefully positioned around the fissionmaterial, which, if constructed correctly will invoke an instand and equally distributed compression untill it reaches critical mass and explodes with the typical effects of any nuclear weapon, massive destruction, radiation and heat.