The slightly more involved approach would be, and I know this one's going to be pretty wild and out there but...
not rendering the objectives impossible to complete. The chips may not do anything any more, but they could have been obtainable as treasure obtainable after completing certain subsets of the "kill x monsters" gameplay loop of new Limbus. Ancient beastcoins may not really be relevant any more, but who would have complained about occasionally picking up something they could trade in for a couple of them?