Gave it some thought like the other thread on being able to craft these yourself. What I'm planning is to let you craft the hibernation pods yourself, but leave the capsule turrets to other mods. Just to avoid too much bloat with duplicate turrets.
Something like this mod.
https://mods.factorio.com/mod/strategy-mortar-turret
Regarding Cerys integration, yeah I can make the hibernation pod recipe unlock on Cerys if that mod is present. I don't want to interfere too much with the Cerys puzzle though, so I don't want to use materials from there has hibernation pod ingredients without a good reason.