I think that would be a good solution Anton.
If Hasbro absolutely has to include repacks, why not army builders like you suggest? For the Target Sarlacc set, I think they're fine with the variety included... you get the Skiff along with some hero and villian figures... essentially a true battle scene. The Lars homestead really isn't a battle scene in my book. It's a desert home with blue milk, and it looks cool.
Since it's hard to really throw in a ton of army builders in this set, unless they went with a few Sandtroopers I suppose, perhaps they could have included a couple Jawas, an R5-D4 with a "light up" feature for when his motivator explodes, and Luke. I think that might have been better. Or just a few homestead droids.