-Historical Content...it is on the History Channel after all.
-Paintball, team vs team....sort em out quick.
-THR members (at least people who are more proficient in a wide array of weapons than the contestants' specialization in one field)
-Trebuchets
-Gecko45
-Proper pronunciation of weapon names.
-Correct facts about the weapons (ex. "the 1903 has been in military service longer than the 1891 Mosin" /paraphrased...)
-Mention of UFOs, and other totally nonfactual stuff, like in all the other History Channel shows.
-Better editing: showing an advert for the next weeks episode with the kid totally killed the final showdown.
-Explaining actions: to potentially give some tips to the viewers, thus making it educational.
-Equal/identical competition: everyone shooting the same weapon at the same target, not the hodgepodge that makes direct comparison impossible.
-Historical Content. I can't repeat this enough...it is on the History Channel after all.
Basically, it would be great if the "experts" gave a 2 minute dialogue on the weapons, rather than the producer's voice-overs with incorrect facts.
Overall, when I read the cast-call thing a while back, the impression i got of how well-rounded and skilled the contestants should be psyched me out of applying...watching the show makes me wish i'd applied. However, the golden lining in this is that much like the UFC show on SpikeTV (the first season had a bunch of guys who sucked...which gave viewers the impression that they can do it too; and thereby cultivated much stronger casts for subsequent seasons) a second season of this show might have some people who are actually well-rounded and would limit the THR scoffing in the other thread.
ADD: /Sorry OP, this does verge on complaint; but it is constructive criticism that would improve the show for me more than seeing one type of weapon.