I posted this to the redit thread as well
I dont have a lot of play experience on lancer and have not played with any G&S, so take this with a grain of salt. This is purely based on my first read through and my own game sense.
John Henry
Henry has an integrated heavy weapon and a heavy mount, meaning it can barrage with two heavy weapons, which is huge damage potential compared to core mechs. Just want to make sure you have thought of this.
While its base heatcap is okay, its core power making its integrated weapon do 4 heat may be a bit much. As is, before engineering, you could only swing the core powered hammer once before either stress or stabalizeing, (or nuke calv II fuel rod gun). heat 3 would allow for 2 swings (though you would be sitting risky after the second)
Volk
I am hesitant at something with 10 hp and 1 armor also having a base speed of 6, all core mechs with speed 6 have 6hp and 0 armor. I would drop its speed to 5
Fluff: you describe the Volk as a line mech, which typically has me think like “fireing line” while the volk licence has no ranged weapons, and the volk itself is melee beast. This could just be a me thing.
Boarkiller: you can only use a charge if hit by melee, but you lose the charge for any damage taken, which makes it super easy for an npc to just potshot you and make you waste the charge (and therefor waste your quick action). I would make you only lose the charge on melee damage (or even only on use).
Ark hypersaw: seems too good, it has tac melee damage (1d6+2) and a crit effect to prone and maybe shred. I would either drop its damage (I suggest 1d3+3) or add a heat cost. Alternately make it an Aux melee instead of main and give it 1d3 damage, you have a flex mount, and a main aux, but no aux in the license. Making it aux would also reduce the overlap with Blackbeard's chain axe
FYI, I really like the shotspear, it's a neat weapon.
Bunyon
I would likely add a trait that lets it ignore difficult and dangerous terrain while moving. Seems thematic for the slow beefy giant of a mech, particularly with things in its license creating terrain.
Babe: I would likely specify it uses your reaction instead of saying it uses Babes reaction, if it uses babes reaction and it would be basically free (alternately give it a per round limit)
Entrenching tool: I would make it optional to upgrade difficult terrain to dangerous instead of mandatory, increase the versatility.
Jack
Scathach
3 sp and 4 self heat for a conditional off turn boost seems a bit much. I would reduce the self heat or add some additional effect (such as oversheild, or a free ram)
Dorthy
Ardent Charges: The grenade option feels clunky. hit an enemy so an ally hitting the same enemy can get oversheild (note you are not your own ally). I know you kind of themed dorthy around overhsheilding, but maybe try a different effect for the grenades here. As a random idea, any time a (different) debuff is removed from the enemy (such as burn or lock on), roll a d6, on a 4+ the debuff remains.
Anansi
Core power: pretty neat, but I would also make the watch your head per round limit apply independently to each spider web, so the multiple webs could trigger multiple head downs. I may just be underestimating the power of up to 100 squares worth of move ending terrain.
Octo Ghilie: this is mostly redundant with the “dont throw me in the briar patch” trait.
Gumdoll class holocaster: This is stupidly strong, with even slightly decent position you are ignoring one attack every round. It is more than strong enough to justify having limited uses, or requiring an action to pre-charge, or require a contested system check, or force you to brace (and thus have reduced actions next turn), or some other limiting factor.
Anti-Hyperfauna rifle: loading and ordinance combine to make the AMR considered one of the worst weapons in the game, and I dont think the AHR is going to fair any better, even with +2 damage. It loses accurate and AP becomes conditional (or lost entirely if you use leopard, which would typically be the better choice) and gains a system point cost. The free reload on crit form might make it okay at higher licence levels were crits become more common, but for the most part not worth it. At the very least it should be able to switch modes as a protocol, not only during a repair. The loading tag also doesnt synergize well with the core power, though at least the core power causes an attack instead of an overwatch (ordnance weapons cannot overwatch).
I was at least a little disapointed that the artillery mech only had one weapon in its license (and it was a bit of a dud at that). Maybe try swapping in another weapon in the earlier license levels.
Orlando
Beam saber: with the inaccurate tag, you can afford to give it a bit more damage, 1d6+1 averages 4.5 damage, where the charged blade (1d3+3) averages 5. Even with AP and the choice of damage types, 1d6+2 would be an acceptable damage and you could argue for +3.
Max
while the repair cap is terifyingly small, and sensors and tech are shit, having speed 6, heat 8, and hp 8 armor 1 a lot of physical stats.
Shot Saber: this is cool, but I dont think having one less threat justifies the extra damage compared to the gms shotgun while still having the exceed for a whole extra attack. I would bring the damage to just 1d6.
wild child, I would let them slide 1 or 2 toward the attacker before the ram.
SCHEHERAZADE
Morgana revolver This is brokenly good and needs to be brought down heavily. Compare it to hand cannon (from core book) if you fully unload it, you are doing 7 damage at range 8 vs hand cannons 1d6 damage at range (3.5 average) at range 5. Yes you are losing the extended threat and 1 reliable, but that is double the damage, and knockback! You are doing heavy mount damage on an aux mount for the cost of loading.
Sandstorm mine: needs an e-defence.
Twist logics mine: asking players to remember exactly what they did last turn is a big ask. Asking the GM to remember what each NPC did is an even bigger ask. Due to these logistics, this needs to be reworked.
Dinazade: the effect is very powerful, but its already limited to 1/scene, I am not sure it needs limited charges as well.