I feel like an add-on mod for VFE: Pirates and Psycaster could be a nice addition. Something like a few warcaskets for Shattered Empie that only deploy if you really piss them off, then some black-market experimental psyker-focused warcaskets available with enough research and Eltix.

i recently started to look into modding, and adding a few warcasket variants that are just edited versions of existing ones should be something I actually may be capable of ( with my limited knowledge of coding). So if I have time I might do it myself.