It would be handy if the 'vessel' could be changed to actually be a vessel or another non-sphere noun. It gets rather confusing with the MM spheres as people come in and out.
Also, I've lost count of the number of times I've witnessed a triage empath start dying with a full vessel right beside him/her! It would be nice if there was a feature where if someone in your group goes down like that it just automatically flares for them as if he or she touched it.