Another thing to consider is that the health tech didn't use to be universal (speed tech too? either way, I don't think any extra 1.6 in speed is really making a big difference). It used to only go to the cav civs (persia and sele) got the special health tech. Those civs were slow enough that the late game cav advantages weren't OP because players would be forced in constant fight before they could mass cav.  I never liked this change from a23-->a24. It took away civ differentiation. And it was done to make all civs cav viable, which was already the case anyways. 

I always save the pictures. In science, you definitely can't rule anything out. In probabilities there is nothing that is impossible. Definitely interesting post. I'm going to prefer the Huns in lamellar armor or in chainmail.   Having them in rags would be a Hollywood kind of  mistake.    

This thread has some interesting references (later derails into a very long argument about iron cuirasses)  https://www.twcenter.net/forums/showthread.php?664783-Hunnic-equipment/

It seems to me that we agree no unit should be fast *and* tanky at the same time, which seems like a reasonable proposition, as highly armoured cavalry wont be able to reach the speed of their lightly armoured counterparts.    Thus, either reduce the speed of units like the cataphract, and emphasize their role as "tanks", being able to deal lots of damage and take lots before dying; or reduce their armour values, and emphasize their role as a flanking/raiding support unit, that can quickly deal with archers and farmers, but die when caught by enemy spearmen.   One could even imagine diversifying champ spear cav by making the champ spear cav of one civilization into more of a tank and the champ spear cav of another civilization into more of a raiding unit. Or letting the player choose by introducing a tech-pair, where one tech decreases speed but increases armour and the other tech increases speed but decreases armour.

I'd reduce base cavalry speed by the amount of the speed tech, then increase the cost of the speed tech. Same idea for the health tech.

@rossenburg: many js errors, autologin not working, lobby broken, with or without other mods  

Excellent change, bro. Thanks for taking feedback.