Yes, Halo 3 style as level boss's or short boss encounters. Each scarab fight in Halo 3 was interesting as they gave us different weapons to fight them (missile pods and geese, tanks and then hornets / hornet dropped onto said scarabs [still impressed by how well the AI is for that, they pick you up from the scarab as it dies and take you to the next one]). Same thing could be done in Infinite or other games.Scarabs were a lot of fun to take down, but I think a lot of it came down to this. The fact that each time you met one (or two!!) of them you had a different scenario and different ways to take it down was what made me love them so much. I hope this comes back in some way!
This. All of this. I have missed scarab fights. The one in Halo 5 (It wasn't a scarab, but I'm blanking on the name) was kinda meh imo, but the Halo 3 fights were intense! even the Halo 2 fights were good, just a bit more challenging for me. I would love to see new variations of the scarabs, different weapons, movement patterns, all the things!!!