Thanks! Most of it is BDB and ReDIRECT really, plus Restock for the SSME (not the true one of SOCK, but the work done on the Vector's plume is just... majestic. Sometimes I shoot it up on the runaway just to look at how it changes as I throttle up, and the atmospheric expansion is wonderfully done as well. Easily the best plume in the entire history of KSP) as well as Modular Launchpads for the, well, launchpad, which is a custom one I made for this rocket starting from the base Delta IV Heavy o