Walker Assault Style Gamemode

It would be super cool if 343i added in a walker assault style game mode into HI to replace Invasion. What I’m thinking is that one team plays as Elites (or Brutes which will never happen) and they have to escort a Scarab through 3 stages of a map while the Spartan team tries to stop them. It’d be easy for 343 to make a more heavily armored Scarab so it isn’t as easy to take it down like in Halo 3. What do y’all think?