Harmony - Troop Symmetry

The bonus to defense is redundant; the direct effect already exists (the ability itself, the resurrection of the last stack). Adding anything on top of that is excessive (a mishmash of features of different natures); it would be better to increase the percentage of losses resurrected, if necessary.

Added 2 minutes later

Yeah... you're right... It's a problem - a whole hero. There's no way to replace him.

It's a problem, especially since there's another problem - the effectiveness of the machine's special ability depends on unrelated skills - machinery and firearms; should we link them?

And most importantly, a reasonable, specific special ability for machines hasn't been proposed yet.