Army composition question

[Lex]

Disclaimer: I am still not very experienced KB:TL player, but.

I like griffins because they have high hp-leadership relationship, nice initiative + speed and they are nice source of mana with Magic Spring.
I prefer army buffs than direct damage. When our/enemy army grows then buffs also grow in strength while direct damage kill % lowers.
Replacing an army depend on player's style, but Cannoneer is pretty good unit.