Since S2, capacity is no longer a good perk on Torvald. The reason for that is, that it no longer increased the recharge rate of his Mortars. Previously it was 6 seconds for 5 Mortars without perk and 6 seconds for 7 Mortars with 40% capacity.
However, now it is 1.2 seconds per Mortar, meaning its 7.2 seconds per 6 Mortars and 9.6 seconds per 8 mortars (35% capacity).
This is fair imo, since you can stop firing at any point and thus save reload time. However, as opposed to other battery weapons like the shield projector, you HAVE to recharge to full to use it. You can use the shield projector at 100% or at 133%. But you have to use the Mortars at 133% if you chose capacity as a perk. This means you are automatically forced to reload longer.
My suggestion would be this. Instead of enforcing a full clip for Torvald to use the Mortars, how about setting the limit to 6? Like that if you choose capcacity, you may recharge to 6 and fire or wait longer and fire 8 mortars. No enforced longer reload, just the opportunity to “overcharge” your mortar cannon by 2 shots.
And while we are at it: I’d like to mention once more, that I think Torvald should have just 4 mortars which are really strong, so that the first few who are the most likely to hit Wraith and Gorgon deal more damage, and that an entire barrage is not as punishing for bad Monsters or Behemoth.