I couldn't care less what you do for the AI modes, but when a player rage quits and is replaced by a level 2 bot it is nothing more than free kills for the enemy.
Nearly everyone can take down a level 2 bot with ease, save the new players. If not now, than at least maybe by the end of the first season? 90% of the time when I'm playing Dominion someone will leave after their first death in round 1. Sometimes my teammate, sometimes my enemy. But it almost always happens.
I know rage quitting is being looked at you're trying to fix it. That's a good solution, but in addition to that, the level 2 bots are just too easy. Also, give bots some gear! Give them a gear score equal to the average gear score of the enemy team (not their allied team!). I'm tired of sneezing at bots and having to fight 3v4 elimination because everyone can't stand dying once.