3* the btm with 7mil? Where're you referring this from? Mine is 24mil to the 3rd star... I'm confused now.
... Granted tho, you do have a point on the rewards/effort ratio... But if the difficulty ramps up exponentially the same way it does on LSTB we're facing much less odds of even a first star by phases 3-4. We'll have to wait and see to confirm, I guess.
And to the answer above that: of course I've been seeing the strategies. Have you seen my reply in the first place? "z-someone can pass this stage" is about as helpful as "you can pass everything on LSTB with CLS". Try these same teams on phase 5-6 and its more an RNG fest than a challenge, especially if they're going (I assume) to ramp the difficulty up by the same factor as LSTB starting from the high bar at phase 1.
All this, plus the same z-toons are likely to be needed in multiple spots in platoons. Someone's going to have to give those up, and I guess you're not placing any importance on those.