I think there are 5 or 6 of them, between here and over at TVWBB. Not sure if it was on a MiniRK, but I remember seeing a front handle added on to a 26'er. Life has been busy here and I haven't gotten around to finishing my mini just yet. Still need to take the cart back apart, trim one of the leg frames down an 1/8th and put it all back together using pop rivets this time instead of screws.
One thing I am still considering is having the bowl oriented like one in a Performer, so that the lid bale would be on the side instead of the back.