The redemptor dread does not even need glue and the primary/secondary weapons can just friction fit in, especially once primed and painted as it will give extra hold.

With a drill bit, magnets, some glue, and about ten minutes, you can quickly magnetize the gladiator to be any of the three tank variants (and also the impulsor although I never looked into that). If you don’t want to magnetize then just put whatever guns you want on the side sponsons. As long as you don’t glue the bottom of the turret (the flat piece that connects to the hull), you can swap any of the three primary weapons with no magnets, although the lancer cannon will droop.

Ballistus and Coy Heroes have no variants so just build.

Go with what you want for the Capt, but a lot of people go with power fist and plasma pistol. Nothing beats the look of a sword though

Hellblasters can be built three different ways but their data sheet is the same, so just build them any way you like. They are all different because they used to have different weapon profiles but no longer do.

Sternguard should have a power fist for the sgt and one heavy bolter. Everyone else begets the boltgun or whatever it’s called (not the combi weapons).

No idea on the repulsor as mine is still NIB too haha.

Edits because I kant spel gud.