Well, it's ok, right now i'm taking a small rest from moding, so i'll try to use more professional terms.
About mobile mine and remote tank, they're there from vanilla and, i think that unmaned aerial, submarine and those robotics thing you said, it's too futuristic, isn't it? The borderline time period of this mod is late 60s or very early 70s.
The attack helicopter it's not just a rotorcraft, it's there to have helicopters like the very first version of Bell AH-1 Cobra or Mil Mi24A and, specially the first one was really a revolutionary weapon back in the crazy marihuana smoking 60s.
Night vision tech is a mock up from other mod, cold war tech tree extension, and it's quite nice represented, IMO, it goes from the very first and bulky prototypes that you could only mount them into tanks, halftracks and some light tanks up to more modern devices that boost all type of infantrie's night defense and attack values.
A SH tank, depends, you need to consider that you need to have secret weapons also for WW1 period, and a SH tank would definitely be a secret, revolutionary weapon in those years, and also in WW2, nobody knew, back in '42/'43 or '44 that Germany was developing monsters like Maus or those landkreuzers, in the same way that Germany didn't know that Britain was developing a tank like TOG2, were they used? nope. If they were used, they would be in armor tech, where, by the way, there's almost not space left.
The world's first trully air assault at divisional level was performed by the 1st air cavalry division IIRC and later many US army units were adapted for air assault role like 101st airborne division and 11th airborne division among others changing their name from "airborne" to "air assault division" and, it was a hell to reach to the point where an entire division could be airlifted, that's enough point to consider it as a secret weapon as it was not the natural development of an airborne division like it could be the development of the light tank brigade into an infantry fighting vehicle (back in 60s, when the US reformed their army system in order to adapt a brigade centered combat system, only the 82nd airborne division remained as a "pure" -IE, having their soldiers jumping from an airplane with a parachute, obviously- airborne division, being some other ones converted into air assault role).
About APC, it was not used during WW2 as a "battle taxi" (IE,in a combat role and infantry support) but only as a logistical vehicle moving ammo and supplies where needed, the usage of such vehicles (which where the natural evolution of the halftrack) in a combat role, not only transporting troops to the frontline but also supporting them, was what made the APC a revolutionary weapon, and it was first used IIRC after Korean War. And also they only add some bonuses in the game, they don't make nothing serious like being a separate unit.
I'm willing to read those suggestions!