Something like this would have been great in my Lego building days, especially at Age 10 to 13 when I was getting really into Electronic Lab kits, and ended up building a One Transistor Radio. This type of kit would be a great start to learn on how to make real electronics using Legos and electronic parts. I used to make “fake” electronic products such as walkie walkies, a office telephone, and a tape player which were for the imagination only using Legos, but did not include parts that you used such as ’s, wire, and transistors. I support this type of technology using electronic components and legos.
Let's talk a little bit about the Grove system provided by SeeedStudio. Grove components are kinda like the electronic legos of the maker community. A wide variety of components are offered from sensors & UI pieces to wireless communication. They take care of all the hard stuff and provide an easy to use interface for incorporating Grove into your projects.