its like they put stuff in to affect your team negatively, but there is almost nothing that affects your team positively.

Call me skeptical, but putting anything positive in this game would be a first. But something positive means a loss of income in some way.

but to the OP: i have seen teams win back to back games without adding greens and blues and they were not LOL teams either, so it shows that you dont need full condition to win, nor do you need full morale. so in answer to your question: it seems they are not good for anything except to help them make money when you have to buy boosters.