Hi Caleb,
Apologies if this comes through twice, I thought I replied but when I checked back I wasn't able to see my reply.
I think this is the same topic that was discussed while Reltio PS was still engaged. The above approach would not only require a new entity type, but also custom processes for the splitting and linking, as well as for the merging and unmerging. Even with these processes in place, there could still be the possibility of orphaned IDs. Given that custom processing would not be fully supported, our recommendation was to use the Reltio ID (or new ID fields) for both Individuals and Organizations. These IDs would be immutable and could be used for uniquely identifying Organizations and Individuals.
------------------------------
Tim DeMarco
------------------------------