So, since I SEEM to have completed all of what has been released in Black Echoes, so far, I thought it might be in my best interest to make a Cluster of my own, and see how I fare at MAKING Systems.
I have since noticed that, in accidentally adding Systems to my Systems list instead of in my Cluster [accidentally; my fault, not the site's] that I cannot delete or remove any Systems.
Oopsies of this nature will be made as newcomers attempt to create, and create well. Recommend that a delete feature be added, both for Systems AND for Clusters. To counter the possibility of accidental deletes, the site could force an entry of the Account's Password for verification.