TODAY I DID SOME WORK.
Moved from AM1 --> PM6 as covers all atoms (including Pt), and generally seems more awesome. Fixed some issues with the Pd containing head. Still dodgy a bit around the Nitrogen-Metal bonds, don't really understand them. And forked the build_tddft job for Dandelion purposes, first addition being making the Gaussian B3LYP jobs split basis set to allow for the heavy metal.