Since news is dry, I thought I'd bring up the possibilities for statue design.
For starters..
Ludwig the Accursed & Ludwig the Holy Blade
I'm not sure how you would make a switch out between the two, I assume that only one would be picked. I'd imagine it would be Ludwig the Holy Blade.
I found this artwork on ArtStation by Edward Delandre that gives a clean perspective of Ludwig. When I look at him this way, I suppose it would be possible to switch forms in a statue.
The most interesting thing for me is how the Holy Blade would be replicated.
Lady Maria of the Astral Clocktower
Lot of possibilities here, especially if the clothing is non-sculpted. There's the trick weapon switch-out options for Rakuyo's Twin-Blade & dual wield modes. There's also the possible option of a sheathed mode like in the promotion art.
I could also see an option to change out her clothing to resemble another certain character..
Art by SaneKyle
Laurence, the First Vicar
I've been wondering if it's possible to use a holographic effect on a statue for particle effects. It might be too complex of a task though (and expensive).
Orphan of Kos
Both of his forms are so well done that it would be a hard choice to pick one. I can see the base being the husk of Kos.
Art by Hachii
Keeper of the Old Lords
Flame effects and all the jazz. Could have Keeper's Hunting Dogs with them too.