The Lesser Gang & Efaarit Scouts: Does this make sense?

Sturm and Dran might not be the best for this. You seem to be going for a gunline, but Drang works best with melee beasts, Sturm is a control caster, and both want lots of beasts in their battlegroup. Maybe Midas might serve you better?

Not sure if you have the models but it's in keeping with the theme of the list: Dropping the Road Hog for a War Hog, or the Gun boar for a splatter boar frees up a point to swap Brun and Lug for Wrongeye and Snapjaw. Snapjaw's a notably nasty polarity shield target; just try dealing with the unchargeable unshootable effective def ~14 heavy that can also avoid debuffs via orin... Telekinesis spins, star-crossed, dahlia denying orders (she's a great vision target), the feat and shield guards on top of all that makes it quite difficult for your opponent to get much done. They're absolutely worth the pickup if you're going to stick with minions/the super friends (all 4 can fit together in one list if that's your fancy). The cross faction defense buff, independent deliverability, and not needing an external damage buff mean they're the most probably the most broadly useful lessers. Wrong eye also brings a sweet hat; that's important too.

There's nothing wrong with the list as is though!

Also worth mentioning: the Efaarit are really fun with Helga. First reason: their normal functioning gets them way upfield applying board pressure which Helga likes. Second: nobody expects them to charge on feat turn. You only get the impact attacks (need to contact model within 12"), but due to the wording of Helga's feat they are p+s15, are considered basic attacks and therefore slam everything within .5 in, and can get an additional damage die if the target is slammed into an obstruction or equal or larger base. Which leads to reason 3: they are speedy large based backstops needed to enable the damage buff aspect of Helga's feat, and can even shoot before sprinting into position. They may well die from the collateral, but Helga's odd's at maximum range assassinations get way higher if she's putting out 2 4-dice pow14's (letting her 2-shot squishy warcasters through camp). If the efaarit lives through the pow7's she can even threaten heavies herself: all 6 fury to 1-round a jugger (avg 35dmg) or 4 fury for an ironclad (avg 31.5) assuming charges. This applies to everything in range for feat as well, though for positioning reasons models with multiple attacks benefit the most.