Sorry, but no, Salamander armour is excellent in Oiler levels, where you're more likely to be hit by fire and fire traps than the oilers themselves. One of the more evident situations is Compound 42, a level filled with Gremlins, Fire Traps and Shadow Fire, not just Oilers.

Dragon Scale doesn't provide normal defense, so you'll be hit harder by any non-Oilers. Although you'll have a high poison resistance, you won't have the bonus damage against Oilers.
It's a matter of preference. Oh, and Dragon is fairly situational, while Salamander can be used anywhere with decent effectiveness.

Though Dragon has no normal defense, it's one specialized piece of equipment versus another. I feel they should serve different purposes instead of having varying levels of situational effectiveness.

@Potato So you're telling me that weapon-based boosts, which have far more versatility than enemy-based boosts, shouldn't be inferior? I'm proposing these changes so these sets are ideal; you have to make multiple sets in order to be truly effective, unlike weapon-based gear.

While Dragon would be even better for C42, keep in mind that Dragon is very bad compared to other sets in nearly every other type of level.

Alright, let's look at this more statistically using some rough point system I came up with on the spot that's based on my views on how effective certain stats are.

Assuming 1 low bonus= 1 point (for each relevant enemy | .5 if locked to a weapon), status resistances = 3 points each, and each relevant defense = 3 points...

5* Typical Sword/Gun/Bomb Piece: 6 + 3 + (18 + 6) = 33 points
This is assuming the set has Normal/Special defenses, one status resist, and a Medium boost to a specific weapon.

Revamped Volcanic Salamander Piece: 3 + 3 + (18 + 6) = 30 points.
This is if it has Normal/Elemental defense, Fire resist, and a High boost to one family. It has a slightly lower total score, but is counteracted by boosting all of your weapons as opposed to one type, giving you more room for variety. This can lead to boosts to interesting combinations like the ever-so-efficient Vortex + anything AoE combo.

Revamped Dragon Scale Piece: 3 + 6 + (6 + 6) = 21 points. Dragon Scale has no normal defense and is only somewhat useful defensively against Beasts, Jellies, Constructs, and Gremlins, but is largely useful against Oilers, Toxoils, Quicksilvers, and purely Pierce/Elemental damage. The High bonus to Jellies lets it have even greater of an impact on the handful of enemies it excels against.

There is more to the game than C42. A certain armor set being better than anything else in an extremely specific area lives up to the "Specialist" name. Additionally, looking at the scores of the revamped lizard suits and the weapon-based sets, they've got a very close "usefulness" rating.

...It's can be used in C42, elemental defence against gremlins + a Slime bonus? Not to forget the Normal Defence...

But Volcanic Salamander is an experimental set. It's what makes Zebulon unique and the purpose of his/her gear is to experiment with it. (I think)

Also Arcane Salamander Set looks great for Emerald Axis, I think I may have mentioned it before.

@Draycos
"There is more to the game than C42." Yes, there is.....FSC :P

Just because it only has the exact stats to match one level doesn't mean it's "completely useless" in every other level
There are things called "well-rounded" equipment, and the whole set doesn't always have to be worn together

Well think of it this way:

It's semi-useful in elemental damage levels (33%, exclusive)
It's semi-useful in slime-themed levels (16%, exclusive)
It's semi-useful in fire-themed levels (20%, non-exclusive)

33% + 16% = 50%
(100% - 50%) * (100% - 20%) = 40%
So it's semi-useful 60% of the time. Not going to calculate the times when two functions cross over because that'd take too long.

Compare this to things like class gear like Wolver, which can be 100% semi-useful if you use swords frequently, but only 53% semi-useful ((100% - 33%) * 100% - 20%)) if you don't.

In fact, if you combine Salamander with Snarbolax, you'll have armour functions that are semi-useful 93% of the time, even if you don't use swords. It's quite useful as a "jack of all trades" armor.

if it were focus on a single family group it would prove a lot more useful

But only for the duration of that level. In other levels it then becomes useless. As I said before, it's a jack of all trades. It's the type of armor you get if you are short on cash: The Fire and Elemental defense are good for FSC, and the Elemental and Slime Bonus are good for RJP. Not to mention it does this at 4 star, while most other equipment (Vog, Volcanic Plate, Volcanic Demo) only give fire resistance at 5 star.

No other single piece of armor covers both those boss strata like that.

You could have at least googled it.
Armor of the Fallen doesn't provide any resistance or bonuses for RJP, which stands for Royal Jelly Palace, and has fire weakness all the way up until 5 star, which makes the 4 to 5 star jump very painful since players could either grind RJP which is slow, or do FSC at a considerable disadvantage. Salamander provides bonuses for both areas: it's not broken, and it DOES have a focus. It starts off as Chroma which Tier 2 players can use in RJP, and then when they upgrade it to Salamander, and then Volcanic Salamander, they can use it in Firestorm Citadel as well. It's comparable to the Wolver to Vog transition, but Salamander works for Gunslingers, Bombers and Hybrids, not just Swordsmen, and gives fire resistance earlier in the line.

If armors with Medium family damage bonuses per piece could be buffed to High family damage bonus per piece, that'd be great.