they would pissed off the Church of atom ya right they could have done what they did to the ghoul town in tactics. but that town may also explain why they didn't take the bomb in megaton they already had the info they needed from tactics.
i personally injoyed the game a lot. it was the first fo i played after that i bought fallout 1 2 and tactics. i havent played fallout again yet because i barely get the chance soon ill see if the game does hold justice to the others.
the plutonium after 200 year wouldn't have decayed unless it was Plutonium-238then it would have decayed by half about 3 times, but if it was Plutonium-244 then it would even have decayed much if at all. but the water being around the bomb could short curciut some of the bombs systems but there...