This guy is proposing something using one of the most powerfull images / analogies we have as his inspiration. Yes , the design might be horrible, and there are a lot of reasons why some elements of his proposal would not work, frankly speaking we don't know! There are also a lot of the elements would work! If you look at his roadmap he is proposing 11 years of research and within those 11 years technologies are proposed, prototypes build etc, etc, etc. Then there is the moment of final ship design, not before! What he is envisioning is a huge platform (the amount of room we have will make it possible to use this for all kinds of things) which we can use to really explore our solar system and use the industry and momentum that this creates to get a sustainable program of the ground which will make us an true spacefaring species. He is not saying we should leap ahead and only do this when we have the 1G drive or when the Warp drive is invented. He is saying we should start with what we already are capable off and learn from it.
Any argument that we have other problems which we as humanity should solve first (hunger, desease, war) are all true, but that would mean everybody should also stop doing other things, like going on vacation and buying this just to big car, etc, etc. Just think about how many launch sites we would need to get te stuff to build this Enterprise up there and where these launchsites are best located. Also think about how many jobs this creates and inventions it requires and what that does to solve te forementioned problems. There is nothing more powerfull then a common goal
I for one applaud the effort he put in here and he gets my vote. I sincerely think that we as humans should make the trip. Other proposals like sending probes is like watching a football match on the television. Yes it is very exciting and maybe cheaper, but it is no where near the experience you get by actually being in the stadium!
(when his website is back up a.k.a. can handle the load again i am going to read further on what his thoughts are)