Ulm beefed up ...

[Arralen]

Reinvigoration may be too much, but I'm thinking about lowering the base encumbrance off all Ulmish units by 1 or even 2 ... ok, another test game due ...

And the other things will have to wait until Dom3 at least, don't think the dev will make them available for modding in Dom2 with the final patch ?!

[Saber Cherry]

Another possibility is an Ulm-only national spell, Earth Lore (or something like that) that is 2E and 8 Earth gems to cast, which reveals all level-1 sites in a (land) province, or a spell that reveals all elemental sites in a land province, like Tiamat's Something. Either would make sense for a race of earth-attuned miners. Although I like the special units better, because they seem fun=) But as you say none of this could be done through modding.