I agree with what you have to say up to a certain point. I have a friend that has a 3 rotor Turbo Fc 500 hp to the wheels, It sounds amazing! He also has 4 rotor blocks sitting in his shop. But do you know how much one of those motors alone cost? At the very least if someone is trying to give it away 14k!
14K, Just for a motor ALONE! You still have to do all the fab work to get this beast running. Put you down the hole at least another 20k Minimum. Thats also if you happen to be doing all the fab work yourself. If not be ready to dish out quiet a bit in Fabrication Labor. You wont really have any feed back or tech support because not very many people have done this swap.
When in turn even being expensive about it, You can buy an LS1 Crate Motor for 5k Go turbo on it and call it a day for 14k. Which ALOT of people have already done. And parts for it are in bountiful quantities in most local Auto Parts places.
Dyno numbers will be the same too sadly for the 14k you spend on the LS1 Turbo Swap. Compared to the 35K+ 4 rotor NA!
I think what the Scoot will have a major advantage is in Cool Points! You dont see very many around, So your mouth just drops at the sight and sound of one.
Not to say that i wont Love to have a 4 rotor under the hood of my 10th AE, But I'm not a millionaire so i have to stick with what is logical and works.