Mordor has Cirith Ungol.
Goblins has Gundabad Speers.
Trolls are to slow to attack them.
The Cirith Ungol halberdiers are only 3 units, and glorious charge mops them up.
As for Gundabad spears I can't speak to them yet, as I never played 3.8.1, but I'm quite sure anything Goblins has is not gonna be that strong. In any case, faction hasn't been released yet, so I'm not worried about it.
Finally, for the trolls they don't have to catch them, they only need to act as a guard to prevent them from killing archers, which they can't do because
THEY CAN'T TRAMPLE. This whole argument is a moot point, because they can only kill pikes reliably, archers would kill them before they could reach to engage in melee, swords would beat them in melee.