Well first of all you're spot on with the Madrugar's lack of fitting resources. All too often my Madrugar fits have unfilled Highs because I'm completely out of resources from trying to fit what I feel is a satisfactory armor defense. Whereas on my Gunnlogi I can fit basically whatever I want and then have resources left over to stick armor plates, utility mods, ect in my lows.

Secondly I think shield and armor is in a very weird place for vehicles right now. Shields naturally have the recharge rate which is a defining feature of the tanking style, in that (aside from a delay) the shields come back on their own at a steady rate. However their modules lend to a more burst tanking style, such as shield boosters having a large, single pulse of HP. So Shields are both a slow passive tank, as well as a high resist bursty tank.

Armor on the other hand? It's easy to throw out the buzzphrase "stand and deliver" but what does that really mean? Ok it reps even while under fire, but how should those reps compare to the natural recharge of shields? Intuition lends to the answer being "more than shield regen" but by how much? If its too close to shields then shields are still superior due to the possibility of burst tanking. If its too high then you end up with unkillable rep armor tanks. So I guess my question to the community is, what is the proper ratio? Where does armor fit in in the grand scheme of vehicle tanking?

pretty sure you can do like 7-8k with 2 fuel injectors and missiles on a cal tank as well.

mixing armor shield and reppers.