Yeah, mortars are a pain since the patch. I have lost many squads, even on the move. I don't know if it's just bad luck or a broken game mechanic. My units are usually on the move to avoid getting hit, but at some point, the mortar just snipes them. I agree that the 81mm is super strong now, it's like a grenade spitting machine gun...
Back to the Panthers... whats your defintion of Pantherspam? I haven't really had problems with Panthers trying to flank as I usually always have guards to pin and mark vehicle in team games.
Well the panther spam is really a strat I usually see it go like this:
Player 1 picks what ever doctrine and techs to T4 ASAP Tank 1-4 is usually a Panther or he may mix in a single T4 unit like a Werfer or a Brummbar.
Player 2 picks good old OPELS.
Usually a nice sizeable blob of Shrekd Pgrens mixed with Regular Pgrens.(This is to counter T34s so when they are ready to assault they cannot be rammed)
Player 2 abuses skill plane and Stuka to try to take out your Zis since you only have 5 seconds to move the gun.
Player 2 Spams Tigers.
Since they have usually 1+ Cache plus Opel depending on how aggressive our team is on taking them out they usually at the end of the game have floated 300 fuel. So the only barrier for entry is Manpower.
Map Control is largely irrelevant.
Then they get the nice size blob of Heavy armor and A move it at your defenses. In my case the hit my 10+ mines and get picked off by a wall of Zis plus SU85s.
But if I didnt expect this type of tactic it would always be successful. You pretty much need to dedicate most of your Pop cap to AT hard counters and Mines are required. Either your scripts will bounce AT nades off the ubermensch armor or they get pinned by the skill plane spam (Thanks Opels I love ya)
It more or less forces a campy style of game play where SU85s and Kats are all I end up with.
The same thing cannot be accomplished by P4 spam or any other armor Spam. Even Tiger Spam is weaker because they are so slow and easy to pick off with a well protected and microd SU85.
Panthers speed, durability, ease of availability (Thanks Opels), Ease or replacement (again Opels) lack of support infantry requirement (Skill Planes) and very large HP pool makes even a failed attempt relativiley unpunished.
Often failed assaults end in damaged Panthers that get vet and Dead Tigers.