Unit Perks

Let me pick up on your elaborate post by adding that it might be a good idea to have progressive perks. Something you pay extra when you pick it up, and it either increases as the unit levels, or only accessible when you reach a certain level.

Might make high-leveled unit (but smallish size) more valuable?

I don't think its a good idea to evolve the game mechanics around punishing players who throw away units (me), its 1 strategy to acheive high level units, but it shouldn't (in my humble opinion) be the only strategy, you still gain hp, accuracy and spell resists (and dodge if you picked that trait) for each unit level.

What I would like to see was a few more progressive traits though, that would be neat, so I could design a unit around being "babysat" until its level 10

Sincerely
~  Kongdej