Assuming Chris gets the 5 grand (which I doubt he will);
1) what happens if he only uses $1,000 on Lego?
2) what happens if he spends NONE on Lego? (doubtful)
3) what happens if for some godforsaken reason he can't finish it because he doesn't have enough Lego?
4) if he doesn't finish it, either because of lack of resources or lack of "motivation", is there any penalty from Kickstarter for not doing what you say you're going to do or not actually finishing a project you've gotten money for?
What happens if Chris gets a bunch of money that he morally (and maybe legally, not sure about the legality) should spend on lego, but doesn't spend on lego? That is not really a problem I anticipate. I suppose there is a possibility that he spends it on irrelevant lego sets instead of the ones he needs and then screws himself, but I will give him enough credit to think that if he were to get the money he would do a decent job.
I love how delightfully lazy this project is. If he had...
1) Bothered to think of reward tiers that made sense and utilized the products he's already trying to sell (like, "$1 and I'll include your name in a video thanking every backer," "$30 for a Sonichu medallion," "$50 I'll make a five-minute video discussing anything you want," "$100 for a colored commission")
2) Set the funding goal to be the lowest possible to make a bare-bones, spartan version of the model he wants to create using the cheapest bricks available (Let's say $1,000 just for the sake of argument)
3) Established stretch goals to help improve the quality of the final product using specialty pieces and incentivize people to donate more, like "If I get $1,500 I'll make a video documenting my work on the project," "$2,000 and I'll release a new Sonichu issue," etc.)
... then he might actually get the project funded, at least for the minimum amount.
Instead, he just hammered out a brief proposal that amounts to, "Want Lego! I really want these sets! MULTIPLES OF THESE!!!" Never change, Chris.
Yeah, his rewards are remarkably shitty. Basically he is saying "if you give me some money, I will give you some change in the form of legos". The rewards you suggest are good ones, but they would involve a) pirating his own eBay sales, and I assume he wants and thinks he can have both eBay and Kickstarter money or b) making public videos, which he has avoided doing for the last little while.
As for the amount of money, Chris has always asked for "too much" money. When he is just selling drawings one at a time, it is justifiable. It is a defensible strategy, even if it is one he stumbled into, to sell fewer $50-$100 drawings instead of more $20 drawings. It probably makes similar or even more revenue, and it is a lot less work. There is also some logic in throwing overpriced junk on eBay. You only need one person to make a weird decision and buy each thing, and if you have a few things lying around that go unsold for a while it is no big loss to you.
But beyond some weird potato salad-like momentum, this seems bound to fail. I am interested in knowing how much lego he actually needs. He seems to have some specific plans, so a costing of them should be straightforward.
I would think about it differently if he only needs one or two thousand dollars of lego. I don't know which is more if a CWC-like fail, coming up with a plan with that costs $5000, or coming up with a more realistic plan but failing miserably to execute it.
The last somewhat relevant question I have is: what are Kickstarter's rules about amending/reposting? He managed to create a fairly successful eBay business by trial and error. I wouldn't be surprised if he moved towards ideas like The Nameless One's if he had a chance to revise and adapt, but I don't know if he can.