I want to submit my idea for 'Imperial Guard'.
They are magically enhanced super soldiers with the following profile.
M6 WS6 BS5 S5 T5 W3 I6 A3 Ld10
They wear armour powered by steam, electricity and magic that confers a 1+ armour save and 4+ ward save.
They are armed with swords that cut with a toothed chain blade powered by a small electrical takeoff from their armour. These add +1 strength in combat and are armour piercing. They count as magical for the purposes of wounding ethereal creatures.
They carry a ranged weapon that fires a compact version of the helstorm rocket a mere 0.75 inches in diameter. Because they fire multiple shots they have a combined damage effect of:
Range 36 inches, strength 5, armour piercing, small blast. They count as magical for the purposes of wounding ethereal creatures.
If the Imperial Guardsman stands still he may fire twice in the shooting phase.
Guardsmen are immune to psychology, and stubborn. They always count as being within 12 inches of a battle standard bearer for the purposes of re-rolls.
They are bought in units of 1 to 3 models as core choices and always skirmish. They cannot buy command models, but any model may accept a challenge.
I'm tentatively proposing 175 points a model as the standard point cost. That might be a little on the cheap side.
Their Lord choice is the Imperial Guard Commander.
His profile is
M6 WS9 BS6 S6 T6 W5 I9 A5 Ld10
And he is armed and equipped as his brother Guardsmen are. His cost would be about 350 points.