It’s on my todo list.
Reverse engineering it really would not be necessary. I would just need to figure out if the right hooks exists in GF. I’m sure submissions thru GF into Connections would be simple. I’m not sure sure how editing would work. As for cost for me to do it … well I do not really take on client work at this time, due to lack of time. It probably would be cheaper for you to hire a freelancer instead if you want it now.