I like that too. I've always found quite strange that you have those high-trained commanders and you'll so rarely recruit them as your top-mages have really enough leadership. It would be nice and also thematic and logical if commanders, who skipped the magic training for the training of strategy, tactics and warfare, can give small bonuses to the units.
Imagine even nations having maybe mediocre mages but excellent commanders able to give normal units the equivalent of one/two minor blesses, or indies able to train them to move at full speed in their woods. That would be a whole new level of strategy
