THAT IS AWESOME! I pray that Mattel sees this and gives us Horde Troopers ASAP!
I don't even think it would require so many new parts to do. If you change the legs of Trap Jaw and the arms of Roboto they could be shared parts. The plate armor on the arms could clip on Roboto's arms. If they did share parts with the Horde trooper, their back story could be amended to say scrap Horde Trooper parts where used to make Roboto and fix Kronus...As you said the chest armor and helmet could just clip on top of the standard He-Man body...This would make The Horde Trooper as financially feasible as Hordak or He-Ro...
I love the army building idea. Hasbro has really milked it with Star Wars and GI Joe. Mattel should jump o the band wagon.
The best concepts are the elite guard (shades of starwars ) and the Batmek design!
Shadow Horde Trooper: solid black, no highlights
space Horde trooper: with a jet pack
Horde "brute" troop: twice the size
"flash" Trooper: reflective chrome
Skele squadron: purple & black, with skull symbol, reprogrammed by youknowwho
Monstroid trooper: transforming into a mini vehicle.
Tank Trooper (like the "tank Top" concept drawing)
Horde Knights: MYP's ancient design.
um ok. sorry, got a little overboard with dreaming.
Don't get me started on the Royal Guard