Okay, lets disregard the fact that the developers refuse to touch the old plugin and let's poke the many other holes in bringing back MCSGv1. First off, it would cause more problems than it would solve. Why? First off, the V1 plugin has not been updated since 1.4. This means time and effort would be put into updating this plugin to 1.5, most likely bringing many bugs along the way.
Most people tend to associate MCSGv1 with the "perfect" NCP. The thing is if the plugin were able to be ported to 1.5 it would no longer have the "perfect" NCP. It would be just as buggy if not even more buggy than it is right now.
Completely getting rid of NCP? Not an option. Let me remind you what happens when NCP is protecting us from...
Not only will we get hacks that can compare to the almighty LeafyGreenTea, but we will not be able to protect from the super unfair hacks such as Flying, Waterwalking, Spider, and many other hacks. I am not sure about you, but I would much rather have an NCP that glitches every once and a while than having hackers running all over the place. (Makes my job a bit easier as well)
Finally, let me go out and say you people expect way too much out of our developers. This, at the end of the day, is a game. Our developers have lives outside of creating the plugin, (shocking I know) and they should be able to tend to those lives. Obviously when we roll out updates to the plugin, there will be bugs. Over time, however, these bugs will smooth out and we will have the perfect MCSG that you all have come to love. Until then, stop posting rage threads, they do not solve any of your problems.