According to my measurements BEWO KIT has an asymmetry of only 4mm (left/right crank), right crank is closer to the frame (as it looks in riding position) .
If BBS has 10mm then this is an issue.
Additionally another detail that some people ignore is their own legs distance when standing in a normal upright condition.
With my shoes on, I measured about 150mm - 160mm inner distance/shoe to shoe clearance/opening, and this translates to a higher compatibility of a fully developed man with such a Mid-drive axle.
The longest distance which I did continually with BEWO KIT is 10Km up to date, my right knee was injured in a motorcycle accident, and it took me 12 years so the muscles to recover at 95%.
What I did forgot to do prior this KIT assembly over my bicycle, was to measure this distance of the old cranks, so to have today an clue if this have changed any.
In my case I did not feel any pain with my knee, and the plan is now a good bicycle seat to help me staying even longer over it, most nice destinations at my location are 15Km away, and this makes a sum of 30Km so to return back to base.
Even by respecting other people health issues, my advice to such people is to use an hub wheel KIT instead.
And even better to aim for an 1000-2000W electric scooter which has much better suspension and saddle.
An Mid-drive is more suitable to people who has no serious problems with their legs, and they have strength even to use a regular MTB bicycle for their commuting.