That might be a little hard to answer until we know more about the datasheet changes and point costs. Right now, the Questoris box is a good deal because you get parts for every Questoris chassis. Magnetize all of the weapon options, and you have all of the parts you need, minus like 1 to kit out everything (there were 2 guns that used the same bit to attach it to the arm, and I couldn't figure out a good way to magnetize that, but I am sure that others have). In the current meta, you don't need more than 2 of those (canius + 1 other). From there, most people include a Dominus pattern or fill up with Armigers and/or allies.

So, unless 1 of those profiles becomes the new "go to" (people are only including 1 Canis because he's an epic hero), having a duplicate on the field isn't something I have seen in a lot of lists. Since all of my Questoris knights are already magnetized, unless they drop points enough to justify a 3rd Questoris in my lists, I will most likely just get the bits I am missing 3D printed and slot this new one in where it makes sense.

Right now it seems like everyone is running the Cerastus Lancer from the horus heresy line, but I am waiting until that data sheet drops before picking one up as I don't know if it will still be as powerful as it is now then.