Just for me. 60 vermin legionaries shield and spear full command = 175 + (60-25)*5 +45 = 395, Rending Banner for 50 points for 445 total.
I will pick something comparable in costs: 54 Common Goblins with shields, bows, musician, banner and 3 shady gits = 443 points. I go 5 wide once you get in charge range. In a void, you don't stand a chance if I can get your unit below 51 before we lock into combat.
These blocks are supposed to keep your army together and costed such as to allow you to go big. The extra HP help offset negative effects and units killed to remain effective even after taking some damage. Sure in 1:1 comparisons they look good on paper. Most armies outrange them and thus the VS will most likely be the attacking force.
A flank charge or 33% damage due to missile fire and this unit is no longer as good. So where you only calculate max and fresh we must take the game into account as well. They are supposed to be scary and overwhelm you in numbers, if they can. That is the swarm feel we want to create.
And yes, this is new, but there exist sufficient tools to handle this army. It forces choices to play against and with this army and we hope it's fun and challenging for both players. It might take unpopular units right now, but it's not impossible.
EDIT: in the example above for DH 18 clan warriors full command (256) and 10 clan marksmen (190), I force you to charge and flank you. As you can see it's all about tactics and negating your advantages.Some chance and such involved in how it goes, but is that not the game we play?
Let's talk about your goblins, right? So the Vermin Legionnaires force the goblins to deploy 5 wide (your words). If we get to choose the scenario, then let's to for the ideal one:
VS march to just within 24", goblins shoot on 5+ to hit, 3+ to wound against a 3+ armour save. Score 2/27 wound per model, so that's barely a single wound. Next turn, the VS march up to 14", goblins shoot again, another 20/27th wound. Then, VS fail their charge 3 times in a row, getting them three rounds in short range. By then the goblins will have managed to do 10/9 wounds per round, so that's a total of 5 wounds! Stunning!
Then the VS charge in and obliterate the goblins. Their bows had 24" range, right?
I thought plague disciples were removed from VS yet apparently you made them carry a halberd, a 3+ Asv and put them in core.
Have you checked out my Youtube channel yet? Link: https://www.youtube.com/channel/UC8s5AkuzccDY_M0zBVIDd7w