Complete (?) list of Advance trains issued

To a degree the bigger engines like Gordon would suit the advance format much better as would the coaches (as opposed to trucks), the smaller engines would be a problem as you need enough length to get the motor, battery, etc... in the body. You will also find all the advance trains are built on a universal set of chassis, they are not different lengths. So to do the smaller thomas loco's you'd need to re-tool/design the chassis.