Annatar your funny. Everybody elses opinion or comment is irrelevent
I didn't call his opinion irrelevant, but the comment was. He wrote it out as needing a whole mess of techs, when in actuality you just need one tech with no prereqs to give mitigation. So yes, that analysis he made was not correct. But don't make the sweeping generalization of 'everybody elses'.
It may take a long time to kill one turret but the player must invest much more in building such a wall and put everything in one basket so to speak which is really better for you...less fleet to deal with.
Never understood why everyone keeps saying it. Two turrets is enough to get mitigation with Synergy. Four turrets costs less than a carrier cruiser. Twenty turrets is like 5-6 carriers, roughly. Sure, it takes a lot of money to max the potential of the mass defenses clump, but as I said that's icing on the cake. It's less effective with fewer numbers, but then there are also fewer ships in play at those game stages. It's actually the late game that (relatively) trivializes the defenses because they don't scale with fleet size and eventually you can reach a critical point where you can still roll them.
So your point is that their new defense technologies shouldn't allow them to hold off such raids with "much fewer" turrets? So what would you advocate? "Slightly fewer?"
Well, as I said before - take a look at the TEC's upgrades, they got great damage upgrades to make them more dangerous, but you can still kill them the same as before. The Advent get a bit of a damage boost, but they are made dangerous not by the 50% damage boost but just because it takes much longer to kill one so it has the time to dish out more damage.
Certainly, shields on buildings plays well to the Advent race, but to me it's an awkward way of making them dangerous. Mostly, again, because mitigation is a very powerful mechanic that also does not scale well. The fewer the ships you have attacking, the worse it becomes. You can still max mitigation, so the few ships are much less effective. And, since you only need 2 turrets to gain the benefit of mitigation (though obviously less shield hp) with 5 labs or any number of turrets + hangar (which also sounds like it will get maxed mitigation in the next patch) and 3 labs, it's very possible to run into this situation.
So back to your question: yes, lower max mitigation on the turrets will mean they die faster and do less damage over their lifetime so for a set raid of x ships you would need more of them on the safe margin. Right now it's pretty uneven. You can still knock out TEC/Vasari turrets with only a handful of Ogrovs easily, but even though they outrange the Advent ones, they do so much less damage that it would still take an eternity.
On the other hand, faster mitigation decay would allow for fewer ships to have an easier time because they would not be able to max it, but that's a change that affects the entire race so that's why I'm not proposing it.