I'm in the process of looking through the changes made in the new version of Rally Ho! and have noticed a couple things that you may want to look at. Most importantly, in /data/Overrides.txt, you probably want to change the fullscreen filenames for the liquid 2 and liquid 3 pngs to match their windowed counterparts.
You changed "HAMMERER" to "EXECUTIONER" in /raw/graphics/graphics_rallyho_dwarf.txt. I'm not sure about this change. The wiki says "HAMMERER" is a valid position token, but doesn't mention "EXECUTIONER". In my testing "HAMMERER" gets used for the Hammerer dwarf, but "EXECUTIONER" does not get used for the Hammerer dwarf. Maybe define a sprite for both tokens even if they have to share a sprite? Is there something that the "EXECUTIONER" tag gets used for? I've seen this token in other graphics pack but am not sure what it is used for.
Also, as very minor things, you removed an extra pixel on the Human Crossbowman sprite at 6:13, but didn't do the same for similar Crossbowman sprites at 6:15 and 6:17, but those don't get used so not really a big deal.
And you lightened the outlines for the Whips of 3 the Human Lasher sprites, but not for Whips of the other 3 Human Lasher sprites. Oh, just realized that this is probably special detailing for the Elite Lashers. Maybe it's supposed to be sharp bits woven into the whips or something.