If I am the only one having a problem with the weapons lethality (and low level of protection provided by a power armor - though we haven't really discussed that), as seems to be the case from the few other participants in this thread, there is no reason to change the rules as they are now.
I don't think you're the only one (though, personally, I don't agree with you) - I think the forums are actually pretty evenly split.
I just don't think it's a right/wrong kind of thing. It's a "what kind of game do they want to make" thing. It's perfectly fair for you to raise the point, but it's also reasonable to expect that FFG is marketing the game to a crowd that wants a more lenient system than you do - remember that a lot of the "less hardcore" potential buyers don't come around here, either.
Personally, I try to think of this as a beta - not an alpha. The game has already been designed, and FFG isn't looking for us to modify their vision of the game (such as - arguably! - the level of lethality). What they are looking for us to test is stuff like weapon balance and conflicting rules. It's a thin line, though, and I'm not the one to say where it's drawn.