You bring up some interesting points. I have a couple of disagreements though.

1. We can easily lower the threshold as well as buff the hardeners. 80 damage for instance. But being able to rep through swarms shouldn't be something only armor can do. Even if we go to active reps as True proposes, armor still has the ability to repair damage through attacks. A large part of the disparity between shields and armor is based on this, even at the infantry level. Active or passive, if reppers are up and running on armor, they always work, with no way of stopping them. Shield not only have lower reps than armor, but also can have their reps stopped. There should be a circumstance where this doesn't happen, and 60% hardeners allow for this.

2. I don't think fitting is going to help Gunnlogis as much as you think it will. For all intents and purposes, when activated a proto module is essentially the same as militia. The only difference is cooldown time. We can currently fit a Gunnlogi with basic active mods and proto passive ones and it would perform no different than a Gunnlogi with proto active mods, save the proto one can get back into the fight sooner. While one could argue the merits of faster cooldowns being an advantage, the problem arises when modules are up and running. Armor is simply better. It gains more health per hardener, can have higher reps than shield, and those reps are unable to be stopped. As I mentioned in the OP, armor gets far more ehp per hardener than shield. This is another part of the disparity. Armor simply takes more shots to kill of anything, even with the major armor bias of AV weaponry, both infantry and vehicle versions. This is why I suggest 60% hardeners; it closes the gap in terms of how much ehp they give. And even with 60% hardeners, armor still gains more ehp than shields do. I don't want to nerf Maddies though; I'd rather bring Gunnlogis up to the Maddy's level. Thus my proposal.

Before we continue.

Dropships.... Think about them too...
In the case of reps.

Just saying don't forget the little guy! What happens to tanks affects every vehicle.

I agree with your points. I fel like the problem with Gunnlogis is lack of ehp AND lack of reps, but we should get more modules out before evaluating hardeners. Although I still believe shield hardeners should be better than armor hardeners.

I like your booster idea, and I think that was what CCP intended from the beginning. Armor reps are slow but constant (not saying passive is better than active True, I tend to agree with you on those) while shield is quick and front-loaded. Although I would contend that shield should give more HP/minute than armor, since armor has more raw hp and ehp than shields do.

And thanks for the appreciation! I like having well thought-out discussions on this game. As much as we need to do, I haven't had this much fun with a game in ages. It feels nice to have a conversation on HAVs that didn't turn into insults and petty arguments on the side.