[Graeme Dice]

-2°) some spells cast with no use at all
a commander having an air shield from start of battle (in my case that was a holy prophet, with air-shield cause of bless effect) that cast an air-shield spell at first round ..... (no spell researched at all)

Was your blessing strong enough to give an 80% air shield? If not, then the spell was hardly a waste.

I don't know if I could wish for "advanced battle AI editing tool" . something tells me that the game does not handle that

It couldn't handle it without seriously increasing the size of every data file sent back and forth between all the players.