I'm just posting this because I know I was curious, and maybe someone out there equally curious can benefit:
This is just to enumerate options, things like boltguns will be disregarded because they are defaulted and plentiful
Battle Sister Squad box:
1 Combi-weapon mount (plasma, melta, flamer attachments)
1 Plasma Pistol
1 Chainsword with sheath
1 held Power Sword with sheath
1 sheathed Power Sword
1 Heavy Bolter
1 Heavy Flamer
4 Storm Bolter
2 Simulacrum (full arms, though both have a pauldron attached and only 1 body seamlessly fits both shoulders... you can trim the pauldron off easily enough to fit other bodies)
1 Incensor Cherub
Tons of heads... 1 coifed it seems, 2 raised visors (one normal, and one Celestian pattern)
2 slung boltguns (I really like this for modeling)
2 helms held in right arm (again, 1 Celestian, 1 normal sister pattern)
Holstered Bolt Pistols
A few held items (Icon and grenade)
Celestians are differentiated by a fleur de lis on their helmets
Superior has pretty much the same options as above with an additional option of a power maul, and she has a couple of spiffy options to adorn her backpack (the halo or a fleur de lis)
2 of each heavy weapon
2 armorium cherubs
Tons of head options again
3 Purity seals I wished there was a couple more. I'm going to check again to make sure I didn't miss any because it feels a little thin.
The heads are pretty nice... a wide variety of facial poses and accents on them, but the bob hairstyle is apparently strictly enforced.
The Superiors have a nice range of options in both boxes, which is neato because I really needed a few chainsword + combi-melta Superiors for my normal Battle Sister squads, and normal chainsword + boltgun superiors for my retributors
Crafting 2 Simulacrum is pretty easy out of 1 battle sister box, which is handy. Only 1 Superior is kind of meh for MSU, so it'll take a bit of work and external bits if you want to make 2 WYSIWYG Superiors out of 1 Battle Sister box.
Multi-melta bits are going to be the hardest to get, but you still get 2 per box of Retributors... unfortunately, that's the only way to get them.
Anyways, if any of you are still mapping out what you need to purchase to maximize the options you need for your army... I hope that helps a little!
Edit: finally found the last bit of special weapons, my apologies. I triple checked those sprues and swear there was three Above has been edited
Edited by Purifying Tempest, 20 January 2020 - 12:30 PM.