what's really needed is buffed lvl 5/7/9 heroes, and when you get beyond that, free lvls for the heroes you get afterwards
Yes I'm already beyond that. Patchwork mod https://forums.elementalgame.com/450250/page/1/ already has buffed heroes. They have better equipment, mounts and 1-2 more traits. They lost some traits which are useless for AI. There are already 12 premium 15 level heroes packed in exclusive armor and weapons and mounted on ashwake dragons. These heroes are available after common 9 level heroes at 600+ fame. BTW AI gains fame very quickly and is able to get these dragon riders before human player.
I need your feedback and requests to move forward. I plan to add undead heroes this weekend. You will be able to use Undead heroes without the rest of my mod but perhaps new undeads will be much tougher than common other races. No they are not overpowered, they just use everything that human player can use. Unfortunately in original version AI doesn't use many things. For example best AI troops with one-handed mauls doesn't have shields and this is not fixed even in 1.5. There are few AI troops with the full set of amulets, there are no mounted archers, empires don't use horses and kingdoms don't use wargs.