well what do you guys think?

Vrasku
12 uruk hai with crossbows
mahur
12 marauders 6 shield 3 bows
uruk shaman with armour
4 ferals 8 uruks with pike
uruk captain with heavy armour and shield
4 ferals 8 uruks with pike

or

get rid of Mahur and his warband and add named wraith on fell beast or Saruman

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RIP Christopher Lee

If you plan to make a huge "phalanx" with those pikes, it could work. I made a new list based on idea of phalanx, with some extra.

*Saruman
-3 berserkers

*Ugluk
-3 feral
-8 pike

*Uruk-Shaman
-4 feral
-8 pike

*Vrasku
-11 crossbows

Overall: 750p, 41 units, 8 might. Uglug can stand in front of pikes instead one feral. One crossbow off so points go nicely with 3 berserkers. Berserkers look good, and they hack well if saruman knocks enemies or even transfixes. Is this any near what you was looking for?