That's the beauty of having a platform that can easily be upgraded to handle the bigger/larger/more everything. If all that you stripped was the idler gear, then I say it was a good day
. Once you get one thing "beefed up" , the stress will travel to next weaker point. If I had to take a guess of
what's next?, it will be the drive shafts twisting/failing. Don't worry though, 3S LiPo batteries tests the durability of a lot of trannies, and drivelines.