Ugh, not this again. It's a cute idea, but not really practical. Also, I wonder about the guy (if he is in fact a guy) who is proposing the idea. He claims to be an engineer, yet he won't give his real name and he also offers no real evidence that his "plan" will actually work. He shows no technical schematics for his proposed systems, just a side view of the Enterprise refit with "this goes here" tags all over it. I can make one of those right now, it proves nothing.
Plus, there are a lot more efficient ships being designed by people who we know are really engineers. To be honest, this sounds more like a fanboy proposal than an actual "this could work" proposal. But, that's just my $0.02 on the matter.