I've been working on a HOTT mod for my campaign needs and have had two test battles to date. Here's a picture from the most recent involving undead and wood elves. It involves close combat between a Wood Elf Ent and Dragonfly Drakes vs Undead Pike. Test battles have no effect on the campaign world of Aeyr.
Much more work lies ahead for my HOTT mod. I've changed the direction I was going, and am simply adding new troop types, possibly more spells and slightly increased weapons ranges. Played this battle using a d8 vice d6, but that idea doesn't seem to work very well.