Well, actually, since we're so close, there's really no need to rush and get these all in at once. It's still important to take our time to ensure a quality final product. With that in mind, some of these are great ideas, but not all - the fury is pretty boring, and very similar to at least one card in the master list and at least two "real" cards. All cards will still be judged on their own merits, and only secondly on whether they fit the set. Because most of these cards are non-controversial, I think it's okay to break the one-card limit.
The saltfarmer looks like a nice common. Nothing flashy, definitely in-color, and not quite a repeat.
The Stinger guy is my favorite of the bunch, but "stinger" sounds a lot wimpier than a barbarian should be. The ability rules, though.
The cinder beast is pretty cool, but trample might be a bit much. A 5/5 for four mana is really good anyway, even with the drawback (which is a lot less than Balduvian Hordes' was, because it's controllable).
On the lava one, why untapped mountain? Why not just "

, sacrifice a mountain"?