It definitely would be a great addition for industrials. ATM many meta items are cheaper than the M0 because M0 needs to be crafted (so cost > craft items) and Mx can only be reprocessed (so cost > craft items /2 )
However production of meta items through ratting is also a specific niche product, which ensure a small part of value in the activity. eg restrained/compact MSE, compact ballistic, etc can be worth more than T2.
So it may be difficult to add meta variant in industry without removing the specific ratting value (which is bad because removing activity products dumbs down the game by making all activities look the same).
Cap modules need both M0 and specific exploration data items, eg “y-t8 compact 50000MN” needs “compact electronics”, “compact conductors” and “compact compounds” - restrained 50000MN need the “restrained” items, enduring needs the enduring.
Making all the meta value need data sites items would also increase the value of data sites, which would be a good thing.
maybe making specific M0 item, eg “50mn incrustator”, required for production and also dropping fom rats would be a good idea. eg a rat that drops a 50mn would instead drop both a 50MN and a 50mn incrustrator.