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Infrastructure
The basic idea of Nod's infrastructure is that, rather than placing a Construction Yard on the battlefield, Nod builds its structures "off-map" and then places them within range of Outposts on the map. Nod's starting Outpost would likely be special in the sense of being better armored, in order to avoid early game decapitation.
As for power, Nod may follow the GLA path of not requiring power for its structures, or it might simply produce power from the same "off-map" place where it builds its structures.
Tech Branches
The basic gist of this proposal for Nod's tech tree was inspired by the naming scheme for Nod's units in one of the older drafts of the Xenoforce Reborn mod. There, each infantry type (e.g. "Loyalist" rifle squads, "Acolyte" missile troops, etc.) had a vehicle "named" for it (e.g., "Loyalist Buggies," "Acolyte Bikes") on the theory that each infantry type represented a different sect/"school of doctrine" and the vehicles were made and manned by that same sect. However, this naming scheme didn't have any significant gameplay effect beyond flagging the similarity of the two unit types - e.g., Loyalists and Loyalist Buggies both have machine guns and little armor, Acolytes and Acolyte Bikes both have anti-tank/anti-aircraft missiles, etc.
This proposed tech tree for Nod expands on the idea from Xenoforce Reborn by making each infantry type a distinct branch in Nod's tech tree and pairing it with a specific vehicle. Thus, for example, Nod's "basic" infantry squad, the Confessor Cabal, nevertheless requires a prerequisite structure before Cabals can be trained from the Hand of Nod. Similarly, however, that same prerequisite structure might also unlock, e.g., Reckoner APCs to ferry those Confessors about the battlefield.
In order for this to work, Nod units would probably have to start fairly generalized but become more specialized (through upgrades) as the Nod player fills out the tech tree. For example, if a Nod player unlocks Confessor Cabals first, those Confessor Cabals would consist of three Confessors carrying assault rifles with under-slung grenade launchers and an additional squad member armed with an anti-materiel particle beam rifle. As this player completes additional branches to the tech tree, however, his/her Confessors would become more and more specialized.
For example, when the player unlocks dedicated [Grenadiers], Confessors lose their under-slung grenade launchers but gain 2-3 additional squad members with assault rifles. Similarly, when the player unlocks Nod's dedicated Militia Squads, the Confessors lose their assault rifles, but gain gyrojet-based Gatling rifles, which do less damage but allow them to lay down an uninterrupted stream of suppressive fire at extremely long range. Finally, when the player unlocks Awakened anti-vehicle cyborgs, the final Confessor's anti-materiel particle beam rifles is replaced with a medical kit - healing all infantry (and infantry squads) in the Confessor Cabal's morale aura. Thus, as a Nod player fills out his/her tech tree, Confessor Cabals shift from an underwhelming "jack of all trades" attack unit to highly effective support unit, effective at buffing friendly infantry and debuffing enemy infantry.
Higher tier units, such as Avatar WarMechs, might undergo a different progression - rather than going from "general" to "specialized," they might instead/also go from "weak" to "strong" in order facilitate their deployment earlier in the match. Thus, Avatars might start out with a pair of relatively weak lasers with moderate range and an infantry-boosting morale aura. When the player unlocks, e.g., [Attack Bikes and Missile Buggies?], one of the Avatar's lasers might get a significant range bonus. Then, when the player also unlocks Scorpion Tanks, the short-range laser might be replaced with an EMP-based beam and the long-range laser's firepower doubled.
