I think it's funny that Alex posted a diagram of a 4EAT with this thread. :p

you can make ANY part of any car fail if you drive it hard enough... so even if you did get a beefier transmission that could handle all the power, youd probably start *****ing about the differentials and the driveshaft that you snapped etc etc etc.... if they TRUELY made a bogus product then dont you think the grannies driving the wrx's would have the same problems as people with 30 mods who say they baby their tranny (if even infact they do).
like everyone has said 300 million times...
dont dump the clutch if you want to drive your car past 15,000mi
and the other familiar one... 'youve gotta pay to play'