Drilled allows you to March 3x your speed in Marching Column, then declare a charge next turn and use your Drilled rule to redress ranks and complete it.
Empire gets a lot of drilled units, which gives us a lot of nice mobility if we want to pay the points for it.
Parent units confer Stubborn, Frenzy and Hatred to their detachments, which means buffing a Greatsword unit with 2 melee detachments with the Dark Lore buff "Battle Lust" means you effectively cast the spell 3 times.
Lots of units rely on the Warband rule now for leadership stability, and all of our knights have "First Charge", taking these rank bonuses and thus leadership away from them.
Big nasty characters on Dragons etc can only get a maximum of 7 Combat Resolution if you challenge them with a unit champion (1 wound, 5 overkill, close order). If you can passively generate 8 CR with a unit, they cannot win the first round of combat, ever. A state troops unit with detachments counter charging can produce 11: 2 ranks, close order, standard, Griffon Standard, BSB, Warbanner, 2 Detachments counter charge +2 close order, +1 flank charge.
Empire can make it particularly hard for enemy mages to cast spells, by stacking a -2 for casting rolls from the War Altar with a +1 on top of our mages dispel with our Arcane items. Making an Arch Lector your general will push this -2 casting radius to 18''.
Stubborn units can choose to auto fall back in good order, which will give a free reform. If your Greatswords just got hit by enemy cavalry and lost, they can take the fall back and suddenly use the reform to go really wide, and present a lot of great weapon attacks next turn if the enemy follows up, and if they don't you can simply charge them.
If you take Laurels strongly consider a Multiple Wounds magic weapon, in the same example of a unit champion accepting a challenge, one of our characters could potentially double the typical CR output if 3 hits with a Sword of Justice/Giant Blade get through, being +2 for wounds, +10 for overkill.