Your new LEGO® compatible servo mounts look excellent. But how about mounts for TT motors such as the one here:
https://www.printables.com/model/1242632-lego-compatible-dc-tt-hobby-motor-mount-axle-adapt
I don’t a 3d printer and can’t really justify getting one just to print a few of these mounts. If you can make and sell them it would be great!
Is this maybe what your looking for?
Pimoroni partners with Adafruit, it might be something they couls source and stock, if there is enough interest?
I tired those - bought 4 from a different retailer. But they did not fit properly - too small for the motors - and as you can see from the picture they need a lot of bricks to keep them in place.
We don’t sell those motors so I don’t think it would make sense for us to sell mounts for them, but there are services online that will 3D print things for you?