I'm working on an additional improvement as well. It will make assembly of the kits easier for some users as well as being a neat feature for the complete interfaces as well. No definate time frame on it and its more of a convenience improvement than a functional one.
I will also be adding the option of an "all inclusive" kit that will come with everything you need down to the soldering iron and solder. This is in response to seeing a lot of destroyed circuit boards due to too much heat and/or globs of solder on the boards. This will only add about $12 to the cost of the kit and will not increase the s/h cost. Most folks have a 50 watt or higher, blunt tip soldering iron (or gun...) that they figure they'll use on the kit. Guys, the circuit board is about 1"x1.25". You need a 15 watt iron with a pencil tip and 0.032" dia solder or smaller. I would appreciate your feedback on this idea as well.