I share your pain, I am sitting on 710 landing tables for this reason (of our services is templated website hosting and this is all Google Tag data).  I tried all kinds of tricks in the UI to try and land data into a single landing table but it wouldn't let me.  The best I could do to speed the process up is edit the YAML definition in a text editor and change the identifiers manually.  From here I combine all the landed data into a single bronze table which I then use for further processing.  Genie Code helped me create the landing>>bronze pipeline using a control table to list the source (landing) table and the target bronze table.  The control table looks a little funny because there are hundreds of different landing tables in the source column but only one target table for all rows.  Once this step runs it's the usual bronze-silver-gold pattern.