Remove meta module drops from all rats, replace them with meta components that act as blueprints which require a t1 version and maybe more minerals or PI stuff or some t2 materials to build the meta variant.
This will reduce amount of minerals generated by reprocessing and increases demand for t1 modules.
The meta components can be used instead of the meta modules for invention.
Reprocessing a meta module yields the meta component and the t1 module, the additional materials (minerals, PI, t2) could be removed as a material sink.
A dev team for this only needs a database person, game designer/balancing and maybe a item icon artist. Add a fluff writer for win and don't forget to double check if all entries and instances are changed properly.