As the title says, that. But - You know how everyone wants roped, day only EVA suits. So, how about in KSP Tech Tree, there would be a EVA suit. This would upgrade the suit. In the beginning you would have the metal eva suit without a rope, research a rope. Next, you would upgrade a day/night EVA suit. Then after that, you would upgrade for a EVA jetpack, but it wouldn't have much fuel. This would make SCIENCE harder to get, by a slight amount. Thats it, really.