I heard DE said a lot of times they DONT want content to be repetitive and grindy, so i might me losing something in here.
Being generous, being in a little more than 30min mission gives about 2.5k SS points... and the badges rewards are starting at 10k (2.5 hours of the same defense gameplay without counting getting a team or doing less than the full 17 waves) and ending at 50k (13h+ of the same mission again, and again, and again)
So, i should be missing something or this is repetitive and grindy mission that makes you do the same for 15 hours to get 3 emblems? 10 hours of grind for each weapon? (even prime versions you can get faster than that)
Idk, looks like a lot... and all of that, again, with a team that can do it fully for more efficient gains.