"run my mini's like this for them to feel comfy with one finger braking"
Even running the shifter (window removed) just outside of the brake lever (coincidentally also blue LX and hope mono mini) I found the shifter got in the way of my thumb. I've compromised by running brake lever outside, but only running it about 35mm away from the grip instead of 50mm away
"I don't see how it affects control"
On really rough/longer rough descents I found that my little finger plus the next finger simply wansn't enough to hold on. Having my strongest fingers covering the brake lever just doesn't make sense. Having 3 on the bar to hold on and the index finger to cover the brake is far better. You can modulate and pull the brake on/off far easier with just one free finger. With 2 I found they were trying to hold on as well control the braking
"If your minis aren't powerful enough they aren't working properly. "
I've suspected this for a long time. I've just never bothered trying to sort them