I would like to suggest a conventional+ start for Players and for player generated NPR's. This start would begin like any other conventional game with a 2 differences.
1. Trans-Newtonian Technology (TNT) is completed.
2. A Legacy Army is generated. This is just like a legacy fleet in RTW or like the troops you started with in VB6, with the option to build it yourself or not.
The early game armor tech is unfortunately useless in my honest opinion. In a conventional game any rational person would take the short time while they wait for TNT to finish to complete the conventional armor techs and then immediately research Duranium armor after TNT is completed so they can make massive weight savings on any new ship they build.
Also, any conventional start requires that you don't have an NPR present in your starting system as you are likely to get creamed if they decided to pick a fight thanks to the new minimum tech requirements for NPR. So, if you want to have a NPR in your starting system you have to start Trans-Newtonian, this means you would never even see those conventional armor techs.
What implementing this would do is actually allow you to use the early game armor tech, and build the "Trans-Newtonian upgrade" to conventional troops that you mentioned and showed everyone in your dev log. How? Because you could have an NPR either on Earth to fight for control of the planet, forcing a scenario where someone has to leave the planet to survive or make a tense but short peace for the new interplanetary empires, or you could have a NPR on the nearby planets to facilitate building a military to protect your borders. What these would do, in short, is allow you to make important early game military and economic decisions that would impact you throughout the mid and even late game.